Yep, you're right about Danny, and I think that's exactly it about Charlie, too, which is really sort of infuriating. That loss should stay with Jack, and it should continue to be a motivating factor for him for good or ill.

Thanks, that's exactly where my confusion was about Dagobah vs. when Lando has to hand them over in the Cloud City. I mean, the movie makes it look like it all happened in a few days, yet Luke makes tremendous progress.