Thanks for the offer! I’d be interested in trying this and (if I understand your post correctly) you could then also get rid of your harmony hub as well (assuming this would work).
The problem is, however, that I have no idea where to start (and Chat GPT “instructions” are often also nothing more than well-sounding hallucinations, perfect to waste your time). So what would be good is knowing that this could even work theoretically.
I do have some experience in working with Bluetooth though (e.g. I wrote this step-by-step to extract the signals of a bathroom scale via BTLE). But to be fair, I could only do this after finding some rough instructions on the net and, after some hours of trial and error, was knowledgeable enough to write a thorough tutorial for openHAB myself that is easy enough to understand for someone who’s not an expert.
So, long story short: If you have some knowledge, we could try to get this working.