The one where the Coyote is the Antichrist [Cheers episode]

Can anyone help me ID this Cheers episode.

I don’t remember much about the plot. A large part of it takes place in Sam’s office where he’s arguing with either Diane or Rebecca. Every time the door to the office opens you hear part of an (increasingly heated) argument between the regulars at the bar, ending with one of the regulars shouting, “Oh! And I suppose next your gonna say that Wile E Coyote is the Antichrist!” or something like that.

I tried searching (both the SDMB and Google), and came up with plenty of evidence that what you’re thinking of exists (e.g. Post #11 of Favorite ‘Cheers’ moments), but alas, no indication of which episode it was.

I can’t remember what episode it was but I’m quite sure it was a 'Diane" one.

Ooh. This sounds very familiar, and I believe that shouted line may have been by Frasier, who got sucked into the debate almost against his will.

Isn’t this the same episode where Cliff has said something like, “it’s not that he wants to eat a road runner. He wants to eat that road runner.”

… Okay, I just did a search and here’s the quote, which may or may not be from the same episode as the Antichrist line:

If this is the same episode, it’s from “The Triangle,” Season 4 Ep 15.