It's really irrelevant that he was dead for "3minutes"
In the spiritual realm time & space do not exist.
You can go to the spiritual realm for hours & yet only seconds have past
As we know it here in human form.
I think he has found himself in another plane of existence.
Someone that I've known personally that has had many NDE
Always found themselves on the hospital roof looking down at themselves
talking to deceased loved ones, whom would tell them they had to go back.
But they didn't want to come back lol
They felt a very strong urge to want to stay & not come back to this
fear based controlled planet