eARC to HDMI converters

OK, it looks like this is going the wrong way.  It ADDS eARC to televisions which didn't previously have it.  I need to do more research.

Maybe this is the better answer?

https://amzn.to/3owSEta

erik, your better answer is the last of three I’ve tried, the least expensive at about $25, and the only one that works. But last night when playing Legend of the Ring -- maybe it was Lord of the Ring -- I discovered the immersive sound from the 85" Sony TV is amazing. I don’t need to connect the TV to my audio setup. I can reserve that for DSD and Blue-ray.

OP:  I should have asked, can you do optical digital instead?

erik, I can, but HDMI is better and the widget that takes in eARC and outputs HDMI works flawlessly. I’ve been doing quite a bit of comparative listening, and think I slightly prefer the Sony TV sound for HT.