| Parent thread timeline | New messages from the child thread appear as grouped “New activity in merged thread” entries, showing the child thread’s reference number and title. |
| Child thread status | Automatically moves to “ignored.” |
| Child thread view | Displays a “Thread is merged” card indicating the parent thread, with a link to navigate there. |
| Replying | A reply composer appears inline on the parent thread for each batch of merged messages, allowing you to respond to the child thread’s customer without leaving the parent. |
| Thread links | Both threads show the merge relationship in their thread links section, with distinct icons indicating which is the parent and which is the child. |