Thanks for all of the suggestions.
dbphd,
You hit the nail on the head! Perhaps I am still better off using the Oppo 205 7.1 analog outs to the Denon. The sound quality is very good. Actually much better than with my previous Oppo 95.
Using the HDMI may get me the Atmos sound ability but it would involve the utilization of perhaps a inferior dac in a receiver. Good point.
ozzy