If you're unsure what happened with an alert, like why an alert didn't create an incident, or if it was grouped into other incidents, you can now see the lifecycle of an alert from the alert details page.
The alert timeline offers you details on the activity of an alert and how it has been actioned. It will include things like:
When did the alert fire
When did the alert resolve
What incident did it create
What incident(s) was it marked unrelated to
What incident(s) was it grouped into
You can also find timelines for escalations and incidents in their respective part of the product if you want to know more or find out more details about them.