"Interesting. Much like the bags of holding I am familiar with, from my own world - though it would be difficult to recommend putting a person in a bag of holding. They would run out of air. Is there a method to making them, or is it something an immortal is simply able to do?"

He contemplates the information he's been given, and offers a little of his own. "I am in a similar state - there are some things I cannot do as freely as I used to. It is an irritating state of affairs."

As demonstrated, since they have to walk back and he can't just teleport them both back to the ship. He supposes that if this man had his full powers as well, he would likely be able to do the same.