Ken
Lovely video.
I recall sitting aft in an American passenger plane many years back. The bogs were sort-of cubicles in the middle, perhaps just ahead of the wings, and the overhead luggage bins were not attached to them. The result was that you could see several inches of flex & resultant relative movement between the floor-mounted bogs, and the top-mounted bins throughout the flight.
I'm an Engineer by profession, and am pretty sure my aeronautical peers got their sums right, but it wasn't a reassuring scenario!
Best
Simon