AMD GPU Audio Routing

I'm running the latest OpenCore on Sonoma. I have an AMD 6900 XT and it has a display connected via display port, and a second display connected via HDMI though AV Reciever. I can only route audio out to the display on the Display Port, there is no option to route audio out of the HDMI.

Is there any configuration change I can make that will allow me to see/use audio out on the HDMI when the display port is connected?

This works fine in windows and Linux, I can route to either port.

Author: @headhot