So, I've routed the cable box to the TV, but I'm not sure how to get sound from the TV to the surround sound receiver. The HDMI from the eArc to the receiver isn't sending sound to it. Isn't it an "In" port rather than out?
On my new(ish) system eArc is a two-way street. The tv and the receiver were released in 2020. My older systems don't have eArc and those seem to be one way only. If one unit doesn't suppirt eArc, it won't work.