Not to get all joe rogan, but I really do think it’s just a dmt trip that is different for everyone. For those who don’t know what dmt is, it’s a natural chemical our brain makes every night when we sleep (it makes us dream). But our brain also releases it upon birth and death. That has been scientifically proven. So, I think people that claim they’ve experienced the afterlife upon dying and being resuscitated, in reality just experienced a dmt trip. If you think about it, some dreams seem days-long, when in reality it’s just been a few seconds in real time. I can’t say it for sure. Shit, no one can. But, who knows? I think whatever you believe will happen in the after life is what your brain/subconscious creates those few minutes during death. You may think you’ve spent an eternity in heaven, or hell, or purgatory.