Imagine a Soul Traveler trained as a pilot of an interstellar Time Space Ship

 A Soul traveler already is in the right frame of mind to do this in some ways even before any training as an interstellar time space pilot. So, training to "take the whole ship" instead of "Just his soul body" through the universe and into different times and spaces and to take passengers along on this journey just makes a lot more sense regarding conveyances built from now on.