2/3...one. Actually the problem is worse if you start with #OBE's instead of NDE's as even at this less extreme level you have sensate self operating with demonstrable independence from "physical" channels.
Properties like #Nonlocality, #Entanglement and #Superposition from #QuantumMechanics are notoriously hard to scale up in macroscopic systems.We are getting better at it but none of what we do works without extreme refrigeration or outside a lab. Nature still holds all the cards

Addendae 1

Quantum material exhibits 'non-local' behavior that mimics brain function
Ppossible way to improve energy-efficient computing
https://www.sciencedaily.com/releases/2023/08/230808110939.htm

* electrical stimuli passed betw. neighboring electrodes can affect non-neighboring electrodes
* step toward brain-like computers w. minimal energy requirements

Spatial Interactions in Hydrogenated Perovskite Nickelate Synaptic Networks
https://pubs.acs.org/doi/10.1021/acs.nanolett.3c02076