Could you elaborate on this? Wouldn't it be the same Thetan in different bodies? Or is The Xenu body supposed to be immortal and therefore the thetan is still trapped in the mountain imprisoned in the body? I'd love for you to educate me a bit on this....
Yes.
If Xenu is at minimum 75 million years old (as he was a ruler and assumed adult) and has been in the mountain prison for that long, and to this day, the only way to achieve the crazy shit in that notebook, would be for Xenu's soul to have left his body, to possess the body of Christ until he died, and then return to Xenu.
Unless of course Xenu later entered the body of baby Ron and took that over. And Bill too, maybe. Maybe you've been listening to Xenu all these years. Xenuphile!
Edit: Yes, Xenu is immortal, after all he's been in a mountain for 75 million years without food. He's an undead breatharian!