https://forums.tomsguide.com/threads/must-i-use-the-arc-hdmi-tv-connection-onkyo-tx-rz720-and-a-lg-oled-tv-dish-and-xbox-go-to-onkyo-it-goes-to-tv-arc-2-0.436746/
Must I use the ARC HDMI TV connection? Onkyo tx-rz720 and a LG OLED TV. Dish and Xbox go to Onkyo....
How to configure HDMI connections between TV and receiver.