HomePod & Apple TV
How to Setup HomePods as TV Speakers (HDMI ARC & eARC)
You can now pair both HomePod and HomePod mini speakers as default speakers to you Apple TV. And thanks to HDMI ARC and eARC, you can even pass audio from ANY device connected to your TV to your HomePods. This works for gaming consoles, receivers, DVD players, cable boxes, etc.