video connect

I have an LG OLED CR PUB HDMI 2.1.  Recently purchased a Lyngdorf MP 60 2.1 (HDMI) a/v processor.  Looking for advice on optimal video connection.  Previously the LG was connected directly to internet via modem LAN ethernet for NETFLIX, Apple TV etc. My previous  a/v processor, Mcintosh MX122 (HDMI 2.0 b), was connected to LG via ARC HDMI for audio only.  So no video connection between the LG OLED and the MX122 processor.  The Lyngdorf is HDMI 2.1 and I am wondering  would it be better to pass the video through the Lyngdorf to the LG OLED than the direct connection of the LG OLED to the internet modem via ethernet?  If advice is to have video go from the the Lyngdorf to the LG OLED please advise on the proper connections.

Thank you.
Guy