You ask a number of questions, some of which might be partially addressed by reference to the literature on the NDE, or near death experience. You may wish to refer to this literature.
Your question on time travel is an interesting one. When you reunite with god consciousness, you are in a state that is outside of time and matter. So at least you are not frozen in one particular time and place. Who knows what potential may then exist for experiencing other places and times?
Consciousness is created by the nervous system in my brain, it is not part of a bigger system. What we call consciousness is an evolutionary thing that helps complex large organic lifeforms to be more aware of their surroundings and themselves which obviously greatly helps survival. That's pretty much it, no god, no bigger part, its an organically created sub-system.
As for near death experiences, I actually had them. Well, I didn't have them, and that's my point.
After a severe illness I collapsed and my heart stopped, only ventricular fibrillation was left. Lack of oxygen in my head made me collapse on the floor like a sack of potatoes, and I was down for 5 minutes, 15 minutes later when the paramedics arrived I woke up and then collapsed a second time.
And let me tell you, when I collapsed and my brain shut down completely there was nothing, no space, no time, no experiences not even black. It was nothing. It j
When that happened I was talking to a friend of mine, suddenly said friend screamed at me, slapped me and shook me, I thought he was making fun and I wanted to continue the conversation, but then I realized I was on the floor, bleeding from my head. He told me I was unconscious for 5 minutes, hit the table while falling. Same thing happened when the paramedics arrived. If they had not told me I lost consciousness I would have never known. When my brain stopped working entirely I ended. This happened one more time a year later, exact same thing.
So according to my experiences, when the brain stops working due to system failure or damage, everything ends. There was no light, no darkness, no me, no god with the voice of Morgan Freeman explaining stuff or pretty much anything else.
Isn't that what angles are for?
I would have needed divine intervention several times in the past 5 years. If my closest ancestors could see me, they either don't care or they can't interact, and the angels are busy elsewhere too.