Why are they so sure that it was the host they were talking to? How can they be sure that Janus wasn't just pretending to let Ethan through? They seem awfully trusting, that way, far more trusting than is reasonable unless they've picked up some technology somewhere along the line to tell which has control. Since that would be a huge development and they've never had anything like that on the show, if you have something like that in this story or some other reason to know for sure who's talking, please tell us!