Continue in dialplan with called party when caller hangs up

As the subject goes, is this possible right now? Trying to Redirect the channel in the h-extension doesn’t help as it has been destroyed already here.

Relying on the AMI link / unlink wouldn’t work because I got a lot of these during the call as I use features.conf applicationmap.

I can let the caller continue in the dialplan with the g-flag to Dial()

But how do I continue with the called party when the caller hangs up?

Of course I could break the bridged call into two by using the G-flag, but I don’t want break the bridge just for this. (Actually I do it this way now, but I try to simplify and make my code more flexible).