Last night's episode of Mad Men was full of callbacks: thematic references, familiar faces, even a "Birdie." (Sob.) And, as pointed out in the Mad Men subreddit, the closing moments of the episode had another link to the seventh season premiere, "Time Zones." Recall that when season seven began, Don was persona non grata at SC&P, but he was funneling ideas through Freddy Rumsen. The episode opens on Freddy's pitch — actually Don's pitch — for Accutron watches.
Did you catch it? Watch again, just at the one-minute mark: