Oh, by the way, I bought an Audioquest Cinnamon cable from Best Buy when I bought the Sony Z9F soundbar for my LG C9, but have not opened it yet.
I was under the impression that I needed an "Ultra High Speed HDMI with Ethernet" for eARC to eARC connection...if not to optimize the current state of affairs, but perhaps soon enough with HDMI 2.1 (??)
At these prices, about $100 for a 2 meter, I would rather not have to buy another HDMI cable anytime soon.
I do not see anywhere on the package that it is an "ultra" high speed cable, and it says it handles over 18 Gbps but not the 48 Gbps that eARC is capable of.
I can return the cable.
Should I buy a different cable for my eARC to eARC connection?