Sorry, I know nothing of ARC except that it’s blinky. It’s possible it won’t work at all for you, since there is no two-way signal involved.
I’d say if you follow the instructions in the TV manual and it doesn’t work, then ditch it and go the other route.
Regards,
Wayne
I feel your pain about the current state of TV audio outputs. We went through the same thing a few years back when I was trying to buy a TV for my mother. We needed a variable analog output (in order to control the volume of an external sound system with the TV remote), with an option to turn...