I don’t use talkback so can’t help I’m afraid.
Also be aware that if you send your tracks to a bus other than the master outs then you’ll lose the AXR hardware panel on your tracks! For example if I multi mic a guitar cab them send them all to a group/Buss I cant then record on those tracks again until I switch them back to the master out as it’s only then the AXR hardware panel reappears…annoying bug… also the phantom power switches off each time too…another bug.
I’m hoping they will sort all these things out soon as the unit sounds superb.
M