Outside, Peggy catches Freddy and says she would have liked to know about the after-hours meeting, as now she's not even a part of the campaign. Freddy's dismissive (though not meanly) of her concerns, saying the work's already done, and she can just concentrate on the "titillating copy." You do your job and I'll do mine. He pats Peggy on the hip with a folder for good measure, and it's a testament to her self-control that he doesn't enter his office with one fewer arm than he left it.
Don appears at Duck's office and tells him he wasn't planning to come back after lunch, so he's wondering if they can chat now. Duck elects to keep the truth under the surface for the moment, half-joking that Roger told him it was just a friendly lunch, but Don's side-eye pretty much tells us all we need to know. Duck talks obliquely about his office and Don's secretary, taking the long way to get to the point, which is that it's been hard for him to figure SC out. Don thinks it's odd that he feels that way after eighteen months, missing the point that Duck, a divorced reformed alcoholic, is going to have a different perspective on things that just about anyone else, but then gets to the crux of his problem, which is that Duck has been pitching more to Don than he has to clients. In other words: You do your job and I'll do mine. Duck requires further explanation, though, so Don gives it to him: "You've been selling their ideas to me more than mine to them." Completely true, from what we've seen, but Duck is still more about speaking cryptically, as he tells Don about his time in the Marine Corps, and how he refused to let his squad leader help him out in a couple situations where he really needed it. "That's not the situation I want to be in here." Don prickles at the suggestion that Duck is covering for him, but Duck expresses his gratitude to Don for bringing him in in the first place before saying he did everything he could on American Airlines, and it was a risk worth taking. "People think of us differently." He adds that he's the scapegoat, and that the whole fiasco hasn't hurt the company, before asking if they can move on. Don, probably appreciative of the value of a good scapegoat in light of the conversation with the PR guy, responds, "Of course we can," and seems to mean it. He adds that he'll "tell Roger [they] had lunch," which Roger will no doubt understand to mean they kissed and made up, and then shakes hands with Duck and leaves. This is where a woman observing would roll her eyes about how silly men are, and she would be right to do so.