I don't know what the title of these episodes are, but this thread here should give a lot of detail.

http://www.sitcomsonline.com/boards/showthread.php?t=293234

One episode has Art Carney peeling an orange due to something gone wrong onstage. (Jackie [as Ralph] had walked into the "Kramden bedroom." Since he was taking more time than usual, Audrey [as Alice] went into the "Kramden bedroom" to look for Gleason. Art seeing something was wrong, padded for time by peeling an orange for two minutes before the other two returned to the stage.)

Someone on that thread said that they saw that scene from a special or an episode when the Lost Episodes were introduced [even though the Lost Episode DVD Box Set doesn't have this even though it says: "Most Complete Collection possible."]

Another one is when Alice is in the kitchen, Art tries to go through the door but the door is stuck. Audrey even though noticing that something is wrong, does nothing. Finally, Art enters through the kitchen window and says: "There is more than one way to skin a cat." The door knocks. Alice goes to answer it. Art says: "Good luck." The crowd laughs because they noticed that the door was stuck. Alice than opens the door which by that time was fixed.

On a Honeymooners special in 2002, Mike Douglas [talk show host] says he saw this episode when it first aired and he was glad they didn't change it [meaning it could have been remade later on?]. This scene much like the other one is not on the DVD Box set but it might have aired on a Honeymooners special in the mid 80s.

Does anyone have what I am talking about?