"You can call this your soul, yes. It is you - it is what you are; you, without your physical being, but with many of the same functions that you've come to know. This is the tethering methods used by, as far as I'm aware, all stations. Attempts to bring the physical body with the soul is largely a disastrous method."

So. "If there's a method that the system the voidcraft 'the train' is from, as you call it, that's different from the standard, then I don't know what that tethering method is. It is unlikely, but possible."