Oh yeah, you're right. I didn't catch that.If you connect to two LG inputs, only one of the device chains will have an Arcana. So some of the players can't send audio to the Sonos.
What setup would you recommend then?
Getting all 7 devices into the LG / Sonos.
With at a minimum, the SeriesX, ATV4k and PS4Pro with lighting.
And being able to use the SeriesX, PS4Pro and X360 also in the bedroom.
Without loosing any CEC control or introducing game altering lag on the LG.