Watching this episode, I got a strong feeling that Sergio Leone must have seen it sometime and it made an impression on him. Almost the entire episode is guys waiting to draw on each other while tension builds, just like the ending of The Good, The Bad, and the Ugly. There are some similar shots -- a low shot from behind a hand over a holster, and close-ups of the men's eyes (something very rarely done in film before Sergio started doing it).
Also, since the men were supposed to draw when a cuckoo clock chimed, I was reminded of For A Few Dollars More, when a gunfight was supposed to start when a musical watch stopped its song.
Anyway, I can't know for sure, but I feel almost certain that the maestro must have caught this episode and liked it, and found things he wanted to use. Watch the climactic duel from The Good The Bad and the Ugly, and then watch this episode. I think you'll see what I mean.
Also, since the men were supposed to draw when a cuckoo clock chimed, I was reminded of For A Few Dollars More, when a gunfight was supposed to start when a musical watch stopped its song.
Anyway, I can't know for sure, but I feel almost certain that the maestro must have caught this episode and liked it, and found things he wanted to use. Watch the climactic duel from The Good The Bad and the Ugly, and then watch this episode. I think you'll see what I mean.