Sometimes, you might notice that the call timeline doesn't appear for a recent call and instead shows an error like in the image below.
This usually happens when an outgoing call is transferred to another agent in Aircall.
In these cases, the system changes the call status to "inbound." Because the timeline feature is currently designed to show only for "real" inbound calls, it won’t display for calls that started as outbound and were later transferred.
So even though the call looks inbound after the transfer, it won't have a timeline due to this product behavior.