My opinion on this are not well finalise yet.

To me, the neurons and synapses connecting are just one part of it. There is more to just chemical reaction.

There is a non-biological element to it, perhaps somewhat metaphysical, or even spiritual part of it.

Instinct, Intuition, imagination, there is more than just “data processing” from our sensory.

Or maybe I am “over-thinking” this 😅