diff --git a/Signal/src/ViewControllers/ConversationView/MessagesViewController.m b/Signal/src/ViewControllers/ConversationView/MessagesViewController.m
index 26fdd6372..d9c226404 100644
--- a/Signal/src/ViewControllers/ConversationView/MessagesViewController.m
+++ b/Signal/src/ViewControllers/ConversationView/MessagesViewController.m
@@ -2698,6 +2698,8 @@ typedef enum : NSUInteger {
     const int currentMaxRangeSize = (int)(self.page + 1) * kYapDatabasePageSize;
     const int maxRangeSize = MAX(initialMaxRangeSize, currentMaxRangeSize);
 
+    // `ensureDynamicInteractionsForThread` should operate on the latest thread contents, so
+    // we should _read_ from uiDatabaseConnection and _write_ to `editingDatabaseConnection`.
     self.dynamicInteractions =
         [ThreadUtil ensureDynamicInteractionsForThread:self.thread
                                        contactsManager:self.contactsManager