You can see those "decorative" feet "skipping" in one of the videos. It's fairly obvious from their behavior that they're touching the ground. The front feet,

You can see those "decorative" feet "skipping" in one of the videos. It's fairly obvious from their behavior that they're touching the ground. The front feet, given that the joints are flexing while the chair is moving, are also obviously in some sort of contact with the ground.