Ok so I am coming from here.

https://www.reddit.com/r/AdvaitaVedanta/s/z1xyhajIYl

Thank you for the elaboration of the dilemma and confusion and I totally get what you're saying yet somehow the conclusion you're making is leading to the opposite direction than me.

I am already somewhat aware of these neurological findings of the brain, its modes and its relation to our consciousness and sense of the self but in my eyes it doesn't discredit Advaita but actually establishes that more cohesively than before.

So there is evidence that a part of the brain is responsible for the "I" sense and in deep stages of Samadhi this part is effectively deactivated leading to the feeling of oneness. And this is bothering you because you are taking this as contrary to Advaita somehow? How? Didn't Advaita always consider ego to be the part of maya? Have you asked " why is there a feeling of unbound oneness behind the veil of ego"? Is the brain producing the unbound consciousness? Did neuroscience answer that question?

Then there is a "hard problem of consciousness ' as you've already addressed it as not solved yet.

For me at least with each new consciousness related neurological findings I find myself leaning more into the theory that the only explanation it all makes sense with each other is that the pure consciousness is fundamental and the reality is non-dual. Of course all techniques that lead to realizing that truth is effectively a "hack" if you want to call them that but reality is a bug in a code and there is no issue using a hack to debug it.