Thanks for the thorugh answer… It’s really clarifying regarding sound.
As for the HDR, yes the HRD badge shows as you indicate… my doubt was raised by a different thread that informed that 10bit HDR was being displayed as 8bit HDR, and that is what I wanted to check… I am not finding a way to determine what I am getting:
and
Anyway, still lots of reading to do before I understando what is going on here…