The teaching about the real condition of a person who dies is completely different from the teaching that has to do with the resurrection of the dead.
The Bible says that when a person dies, that is, when his spirit or energy leaves his body, the thoughts of that person no longer exist, that is, he no longer thinks, neither about the dead body nor much less about himself. that energy that left the body... because the thinking of a human is a result of processes that occur in the human brain. People of science recognize the same thing that the Bible teaches.
Psal. 146:4 His spirit goes out, he goes back to his ground;
In that day his thoughts do perish.
On the other hand, some pseudoscientists say that communication with the dead is real... something that has never been scientifically proven, although many people claim it, the chance of proving that any invisible creature is a supposed ghost of a dead person is absolutely zero. Since the supposed being that communicates is invisible, it can pretend to be any person, dead or alive, that it wants to imitate.
The only thing that these particular experiences can prove is that there are invisible beings pretending to be people who have died.