Awww. This was very sweet, Charlie my dear.
One of the things that has always characterized Jim's work is that "knowingness" is a way of loving somebody. Kermit's friends know that Kermit can't help being a dictatorial control freak, and they love him anyway. Fozzie's friends know that--even if he isn't funny--he will try very hard! And Piggy's friends know that there is really so much more to her than the world is willing to see! (No jokes, buster.)
So it is totally appropriate that Boober and Wembly would both give each other the gift of knowingness, and care about each other by showing how much they "get" each other.
A finely nuanced story. Good job.