^Yeah, this whole episode made no sense to me. I kept asking hubby, "Why doesn't he just SHOOT Serrat?" And yes, it's completely illogical to have the Captain one week say, "We can't meet in private" and the next week show them meeting in private--when they don't even HAVE to. If he's just tutoring her, he could have left the door open. It would have made more sense, since creepy Nuke guy might not have been such a dick if he knew that he could be replaced.
And not mentioning what happened to COB at all? What the hell?