diff --git a/Riot/Modules/GlobalSearch/Files/HomeFilesSearchViewController.m b/Riot/Modules/GlobalSearch/Files/HomeFilesSearchViewController.m
index 5ec57f136..d51cfaa64 100644
--- a/Riot/Modules/GlobalSearch/Files/HomeFilesSearchViewController.m
+++ b/Riot/Modules/GlobalSearch/Files/HomeFilesSearchViewController.m
@@ -160,7 +160,7 @@
             threadParameters = [[ThreadParameters alloc] initWithThreadId:event.threadId
                                                           stackRoomScreen:NO];
         }
-        else if ([self.mainSession.threadingService isEventThreadRoot:event])
+        else if (event.unsignedData.relations.thread || [self.mainSession.threadingService isEventThreadRoot:event])
         {
             threadParameters = [[ThreadParameters alloc] initWithThreadId:event.eventId
                                                           stackRoomScreen:NO];
diff --git a/Riot/Modules/GlobalSearch/Messages/DataSources/HomeMessagesSearchDataSource.m b/Riot/Modules/GlobalSearch/Messages/DataSources/HomeMessagesSearchDataSource.m
index 14a736b36..b136c9af4 100644
--- a/Riot/Modules/GlobalSearch/Messages/DataSources/HomeMessagesSearchDataSource.m
+++ b/Riot/Modules/GlobalSearch/Messages/DataSources/HomeMessagesSearchDataSource.m
@@ -89,6 +89,10 @@
                         {
                             continueBlock();
                         }
+                        else if (result.result.unsignedData.relations.thread)
+                        {
+                            continueBlock();
+                        }
                         else if (room)
                         {
                             [room liveTimeline:^(id<MXEventTimeline> liveTimeline) {
@@ -164,8 +168,9 @@
             {
                 if (cellData.hasThreadRoot)
                 {
-                    MXThread *thread = cellData.bubbleComponents.firstObject.thread;
-                    ThreadSummaryView *threadSummaryView = [[ThreadSummaryView alloc] initWithThread:thread];
+                    id<MXThreadProtocol> thread = cellData.bubbleComponents.firstObject.thread;
+                    ThreadSummaryView *threadSummaryView = [[ThreadSummaryView alloc] initWithThread:thread
+                                                                                             session:self.mxSession];
                     [bubbleCell.tmpSubviews addObject:threadSummaryView];
 
                     threadSummaryView.translatesAutoresizingMaskIntoConstraints = NO;
diff --git a/Riot/Modules/GlobalSearch/Messages/HomeMessagesSearchViewController.m b/Riot/Modules/GlobalSearch/Messages/HomeMessagesSearchViewController.m
index b8ba693be..8ba3d8241 100644
--- a/Riot/Modules/GlobalSearch/Messages/HomeMessagesSearchViewController.m
+++ b/Riot/Modules/GlobalSearch/Messages/HomeMessagesSearchViewController.m
@@ -167,7 +167,7 @@
             threadParameters = [[ThreadParameters alloc] initWithThreadId:event.threadId
                                                           stackRoomScreen:NO];
         }
-        else if ([self.mainSession.threadingService isEventThreadRoot:event])
+        else if (event.unsignedData.relations.thread || [self.mainSession.threadingService isEventThreadRoot:event])
         {
             threadParameters = [[ThreadParameters alloc] initWithThreadId:event.eventId
                                                           stackRoomScreen:NO];
diff --git a/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.h b/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.h
index b778785e6..6ec53437e 100644
--- a/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.h
+++ b/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.h
@@ -19,7 +19,7 @@
 #import "MXKEventFormatter.h"
 #import "MXKURLPreviewDataProtocol.h"
 
-@class MXThread;
+@protocol MXThreadProtocol;
 
 /**
  Flags to indicate if a fix is required at the display time.
@@ -108,7 +108,7 @@ typedef enum : NSUInteger {
 /**
  Thread for the bubble component. Should only exist for thread root events.
  */
-@property (nonatomic, readonly) MXThread *thread;
+@property (nonatomic, readonly) id<MXThreadProtocol> thread;
 
 /**
  Create a new `MXKRoomBubbleComponent` object based on a `MXEvent` instance.
diff --git a/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.m b/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.m
index 9a244040e..25560044b 100644
--- a/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.m
+++ b/Riot/Modules/MatrixKit/Models/Room/MXKRoomBubbleComponent.m
@@ -22,7 +22,7 @@
 
 @interface MXKRoomBubbleComponent ()
 
-@property (nonatomic, readwrite) MXThread *thread;
+@property (nonatomic, readwrite) id<MXThreadProtocol> thread;
 
 @end
 
@@ -69,8 +69,17 @@
         _showEncryptionBadge = [self shouldShowWarningBadgeForEvent:event roomState:(MXRoomState*)roomState session:session];
         
         [self updateLinkWithRoomState:roomState];
-        
-        self.thread = [session.threadingService threadWithId:event.eventId];
+
+        if (event.unsignedData.relations.thread)
+        {
+            self.thread = [[MXThreadModel alloc] initWithRootEvent:event
+                                                 notificationCount:0
+                                                    highlightCount:0];
+        }
+        else
+        {
+            self.thread = [session.threadingService threadWithId:event.eventId];
+        }
     }
     return self;
 }
diff --git a/Riot/Modules/Room/DataSources/RoomDataSource.h b/Riot/Modules/Room/DataSources/RoomDataSource.h
index 76d55375e..1ce04fc08 100644
--- a/Riot/Modules/Room/DataSources/RoomDataSource.h
+++ b/Riot/Modules/Room/DataSources/RoomDataSource.h
@@ -130,6 +130,6 @@
  @param roomDataSource room data source instance
  */
 - (void)roomDataSource:(RoomDataSource * _Nonnull)roomDataSource
-          didTapThread:(MXThread * _Nonnull)thread;
+          didTapThread:(id<MXThreadProtocol> _Nonnull)thread;
 
 @end
diff --git a/Riot/Modules/Room/DataSources/RoomDataSource.m b/Riot/Modules/Room/DataSources/RoomDataSource.m
index f4561638f..82901062d 100644
--- a/Riot/Modules/Room/DataSources/RoomDataSource.m
+++ b/Riot/Modules/Room/DataSources/RoomDataSource.m
@@ -466,7 +466,8 @@ const CGFloat kTypingCellHeight = 24;
                     //  display thread summary view if the component has a thread in the room timeline
                     if (RiotSettings.shared.enableThreads && component.thread && !self.threadId)
                     {
-                        threadSummaryView = [[ThreadSummaryView alloc] initWithThread:component.thread];
+                        threadSummaryView = [[ThreadSummaryView alloc] initWithThread:component.thread
+                                                                              session:self.mxSession];
                         threadSummaryView.delegate = self;
                         threadSummaryView.tag = index;
                         
diff --git a/Riot/Modules/Room/RoomViewController.m b/Riot/Modules/Room/RoomViewController.m
index 1c0e72410..e8ea422ed 100644
--- a/Riot/Modules/Room/RoomViewController.m
+++ b/Riot/Modules/Room/RoomViewController.m
@@ -4283,7 +4283,7 @@ const NSTimeInterval kResizeComposerAnimationDuration = .05;
     [self updateTitleViewEncryptionDecoration];
 }
 
-- (void)roomDataSource:(RoomDataSource *)roomDataSource didTapThread:(MXThread *)thread
+- (void)roomDataSource:(RoomDataSource *)roomDataSource didTapThread:(id<MXThreadProtocol>)thread
 {
     [self openThreadWithId:thread.id];
 }
diff --git a/Riot/Modules/Room/Search/DataSources/RoomSearchDataSource.m b/Riot/Modules/Room/Search/DataSources/RoomSearchDataSource.m
index 5b99eea2d..dd33c86cb 100644
--- a/Riot/Modules/Room/Search/DataSources/RoomSearchDataSource.m
+++ b/Riot/Modules/Room/Search/DataSources/RoomSearchDataSource.m
@@ -96,6 +96,10 @@
             {
                 continueBlock();
             }
+            else if (result.result.unsignedData.relations.thread)
+            {
+                continueBlock();
+            }
             else
             {
                 [roomDataSource.room liveTimeline:^(id<MXEventTimeline> liveTimeline) {
@@ -143,8 +147,9 @@
             {
                 if (cellData.hasThreadRoot)
                 {
-                    MXThread *thread = cellData.bubbleComponents.firstObject.thread;
-                    ThreadSummaryView *threadSummaryView = [[ThreadSummaryView alloc] initWithThread:thread];
+                    id<MXThreadProtocol> thread = cellData.bubbleComponents.firstObject.thread;
+                    ThreadSummaryView *threadSummaryView = [[ThreadSummaryView alloc] initWithThread:thread
+                                                                                             session:self.mxSession];
                     [bubbleCell.tmpSubviews addObject:threadSummaryView];
 
                     threadSummaryView.translatesAutoresizingMaskIntoConstraints = NO;
diff --git a/Riot/Modules/Room/Search/RoomSearchViewController.m b/Riot/Modules/Room/Search/RoomSearchViewController.m
index 8097ca2b0..214f3f497 100644
--- a/Riot/Modules/Room/Search/RoomSearchViewController.m
+++ b/Riot/Modules/Room/Search/RoomSearchViewController.m
@@ -165,7 +165,7 @@
             threadParameters = [[ThreadParameters alloc] initWithThreadId:event.threadId
                                                           stackRoomScreen:NO];
         }
-        else if ([self.mainSession.threadingService isEventThreadRoot:event])
+        else if (event.unsignedData.relations.thread || [self.mainSession.threadingService isEventThreadRoot:event])
         {
             threadParameters = [[ThreadParameters alloc] initWithThreadId:event.eventId
                                                           stackRoomScreen:NO];
diff --git a/Riot/Modules/Room/Views/Threads/Summary/ThreadSummaryView.swift b/Riot/Modules/Room/Views/Threads/Summary/ThreadSummaryView.swift
index c1da2d9dd..1a9799b27 100644
--- a/Riot/Modules/Room/Views/Threads/Summary/ThreadSummaryView.swift
+++ b/Riot/Modules/Room/Views/Threads/Summary/ThreadSummaryView.swift
@@ -38,7 +38,8 @@ class ThreadSummaryView: UIView {
     @IBOutlet private weak var lastMessageContentLabel: UILabel!
     
     private var theme: Theme = ThemeService.shared().theme
-    private(set) var thread: MXThread?
+    private(set) var thread: MXThreadProtocol?
+    private weak var session: MXSession?
     
     private lazy var tapGestureRecognizer: UITapGestureRecognizer = {
         return UITapGestureRecognizer(target: self, action: #selector(tapped(_:)))
@@ -48,8 +49,9 @@ class ThreadSummaryView: UIView {
     
     // MARK: - Setup
     
-    init(withThread thread: MXThread) {
+    init(withThread thread: MXThreadProtocol, session: MXSession) {
         self.thread = thread
+        self.session = session
         super.init(frame: CGRect(origin: .zero,
                                  size: CGSize(width: Constants.viewDefaultWidth,
                                               height: RoomBubbleCellLayout.threadSummaryViewHeight)))
@@ -59,7 +61,7 @@ class ThreadSummaryView: UIView {
         translatesAutoresizingMaskIntoConstraints = false
     }
     
-    static func contentViewHeight(forThread thread: MXThread?, fitting maxWidth: CGFloat) -> CGFloat {
+    static func contentViewHeight(forThread thread: MXThreadProtocol?, fitting maxWidth: CGFloat) -> CGFloat {
         return RoomBubbleCellLayout.threadSummaryViewHeight
     }
     
@@ -93,7 +95,7 @@ class ThreadSummaryView: UIView {
         
         guard let thread = thread,
               let lastMessage = thread.lastMessage,
-              let session = thread.session,
+              let session = session,
               let eventFormatter = session.roomSummaryUpdateDelegate as? MXKEventFormatter,
               let room = session.room(withRoomId: lastMessage.roomId) else {
             lastMessageAvatarView.avatarImageView.image = nil
diff --git a/changelog.d/5562.change b/changelog.d/5562.change
new file mode 100644
index 000000000..729c93acc
--- /dev/null
+++ b/changelog.d/5562.change
@@ -0,0 +1 @@
+Search: Use bundled aggregations if provided.