Methinks your level of reading of the literature leaves something to be desired.
Well it could be. I admit I haven’t read much about it the comparison.
I just have this impression of Alien abduction as being completely external and often focused on medical experiments on the body. While spirit possession in the Bible appears internal and doesn’t seem interested in medical experimentation at all.
I can see where any form of spiritism might result in bizarre memories though.
The Wheels within Wheels chariot is the only similarity I’m aware of.