Techneanderthal, I'm glad you raised the question, I've been thinking of the exact same issue.
I've been trying to get up to speed on the features of today's AVRs. My old receiver from 2004 has no HDMI inputs.
I figured with a new AVR, I can connect multiple devices to it and send one HDMI cable to TV. Then, I started reading about HDMI passthru and wasn't sure exactly how it worked.
My wife watches a lot more TV than I do. She'll use the cable box remote to...