This is going to sound a bit out there, but what if your brain is simply an antenna for your consciousness to come through from wherever. Has anyone actually tried to boot up an artificial brain derived from a real organism? I'd like to see a proof of concept that your brain IS indeed the seat of your consciousness, and not just a fancy quantum antenna.
In other words, we know with certainty that there is no physical mechanism by which some "external consciousness" could influence the brain. So the answer to that hypothesis is a definitive "nope, that's not how it works."
CalTech quantum physicist Sean Carrol explains: https://www.youtube.com/watch?v=x26a-ztpQs8&t=836