can i hook up my denon receiver to play through my yamaha v 477 receiver
What are you trying or hoping to achieve? Connecting these could mean a lot of things, but normally for me would mean taking denon’s output (audio pre out or HDMI out) to one of the inputs of the Yamaha. Unless the signal is enhanced in some way (mostly it isn’t), there is little gain. Are you trying to chain them to use more sources? This may work for just audio (stereo pre), not sure I trust chaining the multi-channel signal via HDMI. It’s more about stability of this chaining, otherwise the digital signal should not get altered. As long as it makes it on the other end without interruptions.