audio-video via a hybrid soundbar
There is a family of “hybrid” soundbars that you can connect in both ways, using eARC
This setup will can be exactly the same as with a regular soundbar
The main difference is these hybrid soundbars have multiple HDMI-in ports and can passthrough audio and video
If we draw this in a slightly different way it should be easier to notice
that hybrid soundbars can behave like like an AVR setup.