Zoom Phone Webhooks not firing for inbound caller events (but working for callee / outbound events)

I am trying to subscribe to caller events so I can recognize when when nobody ansers a call, so we can send them a text to follow up. I am looking to trigger webhooks based on inbound calls.

I have setup a webhook in zapier, it it works for inbound callee events in zoom phone, but not inbound caller events, which I believe is what I need to recognize when we dont answer.

It does seem to fire some events (but not all) for outbound calls where a zoom user is the caller.

But I have not been able to get any webhooks to fire for inbound calls where a zoom user does not answer.

Any idea what I am doing wrong? Is there some permission setting I am missing?

Any help is much appreciated!