lover that you're seeing there. I think somehow people expected him to be this knight in shining armor at that moment. Hendricks: Which he's been so many times. Weiner: [Don] respects her power. As we saw in " Christmas Waltz ," there is a lot about them that's the same. When they talk about their carnal selves, it's just two people saying, I know it, I gotcha, I agree. This is also the episode where Peggy leaves the firm, and Joan notices Peggy leaving during the party. What we should make of Joan's expression? Hendricks: I wasn't trying to play some big moment. She leaves every day. The sense to me is that Joan always has her pulse on the energy and the politics in the office, and for a moment it was a sense of something being off. Weiner: Exactly. There's the other thing, which is that, if you really think about it, a big part of the story is that Peggy is completely excluded from Jaguar, absolutely because she was a woman, and so this celebration is meaningless to her. Hendricks: It was really about the storytelling of that moment. That moment's about Peggy. Weiner: There's an essence of dramatic irony, which is that the audience knows that those characters don't know, and so just to see those two women passing for that last time in that office was something I didn't want to miss either. Had you known going into this episode, which is very Joan-centric, would