I’m still trying to figure out how exactly to debate this O_o It is like debating the hypothesis of a theological theory of a presumption extrapolated from 2 and a half words.
I guess you would want to start by looking at research into the brain. I mean, not just a little - a lot of it. All the waves that make up thought and decisions and emotions and memories. Dream state. Awake state. Sleep state. Electromagnetic imagery of an active brain versus a dead one versus one in the process of dying and being brought back (good luck).
While I have not seen the movie “Flatliners,” I think it would be safe to presume that the scientific accuracy thereof would be to biology what the movie “Hackers” is to network security, and suggest disregarding it for this debate.
The evidence we have is the first hand memories of individuals who flatlined or almost flatlined (ie, could have, but it wasn’t recorded) and came back to life.
Unfortunately, the research on the brain is just beginning, and even more unfortunately, people are using terms like “quantum psychodynamic electromagnetics,” (I swear to christ, I saw that term) which I think is science-talk for “Um, WTF.” I tried looking up some of the studies and shows I’ve seen, but all I can find in my cursory glance at Google is a bunch of psuedo-science. Fact is, research is still going on into how we dream, things like deja vu, and conscious thought. I don’t think we know enough to make any assumptions (much less conclusions) about what happens to the brain when you die.
(I realize that your question is theological, but bear with me)
I think it is safe to say, though, that dream-time doesn’t necessarily correlate to real-time, so we keep that in mind. An experience that “feels” like hours can happen in a split second - ie, in the time that it takes for your brain to shut off into unconsciousness. It could be impressed when you come back. Or you could believe Freud and say that your subconscious implanted it after you woke up. My hypothesis would be that dying happens just like going unconscious; eg, if you die from blood loss, it would mimic being knocked out from having a vein pinched.
Then on top of all the science and psuedo-science, you have to go and throw in theology. That would probably be the biggest debate point, and I think the heart of your question.
As a theological question, the main answer you’ll get is that no one knows. O_o Depends if you believe in a soul, or heaven as a physical place, or what. You appear to follow the modern Western concept - that is, you die, you “go” down the tunnel to the white light and into Heaven. An atheist (and some theists) would say it is just like being knocked out - nothing. That is somewhat hard to comprehend for some people, though.
Personally? I believe that you enter a dream-like state for infinity amount of (subjective) time in the time before your brain shuts off, essentially trapped inside how you lived your life. Do I have any evidence for that? Hell no, but it is a hypothesis I can accept and lets me sleep at night, and it is as good as anything else I’ve heard.
For the record, there have been numerous instances of insane scientists slaughtering dozens of animals trying to do things like weigh the soul leaving upon death. None, to my knowledge, have reached conclusions supporting anything.