The exactly two-minute long section from 12:00 min to 14:00 min inside the episode was clearly intended to be the teaser for the episode to be shown at the beginning. It's clearly the first time Ed has spoken to Mae West on the phone, but it comes well into the episode after he's already spoken to Wilbur about setting up the deal. At a guess, it was moved to the middle of the episode after someone realized that in the planned teaser a time was never mentioned, but Ed tells Wilbur that she's coming at 7:00 pm at 1:37 min into the episode.