However, my Samsung TV has only 3 HDMI inputs and I'm counting 4 devices I've seen lots of HDMI switchers on Amazon, but many reviews- even for 4+ star products- point out CEC compatibility issues ...

If your TV supports HDMI-CEC, then it's worth using. Here's how the feature works and how it can be an added benefit to your home entertainment setup.

I can get the Samsung UA40D6000 TV to find the receiver in the CEC/Anynet menu and have it turn it on, but I can't get the AVR remote to turn the TV off. The CEC is set to allow power control of ...

There may be a couple of reasons why HDMI-CEC isn't allowing you to control your Xbox Series X|S using your TV remote. For starters, your TV simply might not be compatible.