- If you rewatch the scene where the Author stops his opening narration to snap at his son, you can see him trying to ignore his son entering the room off screen a few seconds before he finally breaks down.
- Gustave flirting with Agatha is Five-Second Foreshadowing that it's a Secret Test of Character for her, as we already know that Gustave prefers older women.
- The last image of the author features a painting of mammoths. Mammoths are majestic creatures of a bygone era who passed on, similar to the Grand Budapest Hotel and its cast.
Fridge / The Grand Budapest Hotel