Question about FeinTech HDMI eARC Pass Switch 4x1

This works perfectly for me.

I use it with a Philips sound bar. Here's a user review from the Feintech website:
The eARC Pass Switch does exactly what it's supposed to do. In my projector setup, the sound from a stereo pair of HomePods is reproduced via the Apple TV. One source is the Apple TV itself and the other source is an Xbox. In theory, it is possible to connect two other sources.
Switching is done simply by remote control, by pressing a single button.

Yes, that's exactly my setup and it works perfectly.

That's exactly why I bought it... it works wonderfully. 👍🏻

Yes, that works, I have an older plasma on the HDMI to TV.
You can still connect an ARC-capable soundbar such as a Sonos Arc Playbar to the HDMI to Sound.