By the way, strange subforum to post this in....probably general a/v discussion or a coupla others make more sense than Contest Giveaways from Audioholic Partners or do I get a prize from you for answering your questions?
What tv is that, tho? When I search Samsung OLED55CXPUA I get results for LG sets altho I also see an article that Samsung did finally make a deal with LG for OLED sets earlier this year.
If it is the LG set seems they don't make it easy and simply provide an optical or analog audio out. What a pain, they expect you have HDMI ARC....
The converter you're showing appears to take composite signals from your avr and convert it to hdmi....which might work if you wanted to send something from the avr to the tv, but that wouldn't do you any good for getting audio back from the tv, tho.
ARC (Audio Return Channel) HDMI extractor seems more what you want, something like this
https://www.amazon.com/ARC-to-Analog-Audio-Converter/dp/B00ZJPTKH0, might be a digital version so you can use coax or optical inputs on your avr.
