If the brain is ever completely inactive (as seen in EEGs) for any length of time, there is no chance of recovery from that state. The body can be kept alive, but the brain is gone and will never have any other activity again.

So, I'm not sure what you mean by "out of oxygen and energy according to any phsysical mechanism" - for any patient who has ever recovered to tell a tale of an NDE, we know for a fact that their brain was constantly producing measurable electrical signals for the entire time.

> NDEs happening under monitored conditions (operating tables)

I had general anesthesia 10 days ago. There was no NDE, felt like they flicked an off switch then turned me back on a few hours later.

They wheeled me from the prep room towards the OR, opened the big door, and then I was in a different room waking up from anesthesia. That’s it.

You also need to study cellular biology, human physiology, and what actually goes on during anesthesia, of all of which (at least!) you are radically uninformed in a way that renders your line of argument specious beyond recovery into meaningful discussion. Please don't reply to me further on this topic.