I went down this rabbit hole the other night and found a German Blu-ray receiver T+A K8[0] from 2012 that supports the HDMI Ethernet Channel. I have not found, however, the other piece of equipment that I can only suspect may be be some sort of HDMI IP injector.

[0](https://www.homecinemachoice.com/content/ta-k8-blu-ray-recei...)

> Ethernet switch: distribution of an Ethernet uplink connection to BluRayplayer, streaming client, TV monitor and up to 3 source devices (via HEC),up to 2 more external devices via LAN cable (e.g. playing console

from the manual