The Bomb Falling Through the Carpet Gag... and a convoluted link to Lucas/Spielberg/Indy?

In the de-age World War II sequence, we see a bomb falling through the roof of the schloss and landing on a carpetted floor. It punches a hole in carpet and the bomb slips slowly down to the next level. This visual gag has a long history in cinema. Blake Edwards (a huge fan of silent films and slapstick) used this same gag in his 1980 film S.O.B., where Robert Mulligan sits down on a carpet that is covering up a hole in the floor, and he slips down to the first floor of the house. I wouldn't be surprised if this "carpet-sinking-through-a-hole-in-floor" gag goes back even further into the silent era, but I'm not an expert about that period of film. If any one knows an even earlier use of this gag, please chime in.

Here is where the speculative connection to Lucas and Spielberg comes into play. Edwards in fact borrowed this visual gag from the 1958 British comedy "The Horse's Mouth" starring Alec Guinness and Michael Gough. The Guinness link to Lucas and Star Wars is obvious. However, the character who actually falls through to the next floor in this film is played by Michael Gough. The Michael Gough connection to Lucas and Indy is a bit less obvious, but still intriging. Gough played Leo Tolstoy in the Young Indiana Jones Chronicles. In this episode a very young Indy meets Tolstoy when he runs away from his parents when his father is visiting colleagues in Russia.