Now that SU6 has been installed at my system as well I was planning to give FS2020's ATC a go again. I used ATC months ago and seem to remember that the co-pilot would handle all ATC communications as well as acknowledging ATC. So far, however, the co-pilot leaves all the acknowledging to me.  I did set the ATC to AI option in "Assistance" to on and also ATC Voices was set to on in "User Experience". Do I need to activate more options to get my co-pilot to acknowledge ATC and if so, which one(s)?

Thanks for your help

ususally what you described does the trick, ie setting the AI communications on. however by conincidence I just ran into your problem as well on my last flight from LIEO to LOWW. Right from the start I had to do the comms though AI Comms was on. Toggling it off/on several times did not help. took off anyway, and tried again off/on during the approach and, well, now it worked suddenly. don't ask my why. have to say I have azure ATC enabled, did not try the text-to-speech ATC so no idea whether it may have been a bandwidth issue as the circle kept spinning quite heavily during the entire flight, may have been to MP/real traffic but on a 250gig line I would not expect that would have been the culprit.

Thanks Phil. In the meantime mine started doing the copilot stuff as well. But just a little too good . After I fired up the FBW A320 all of a sudden ATC kicked in and the copilot went thru the checklists as lightning, not waiting till it was the right moment to execute one of the checklists items 🙂 So that was ATC for me again, off it goes and I will, while waiting for a good 3rd party ATC, go ATCless thru flightsim life. Thanks again.