No sound when using Airplay 2 with Apple TV on Sony XBR 950G
I have tried streaming Apple TV from both my iMac and iPhone using Airplay 2 to my Sony XBR 950G smart TV. I am getting video in both cases, but now sound.
I was able to get both video and sound before the latest Sony firmware upgrade (and perhaps the switch over to Airplay 2 from Airplay)... but that was a while ago... I only watched one movie from Apple TV prior, and that was some months ago, but without a hitch. Now I get video, but now sound, whether I try using my iPhone or iMac as the Apple TV source.
Any thoughts?
iMac 27″, macOS 10.15