I HAVE BEEN SEARCHING FOR THIS
the camera panning while maintaining the dimensions of the 2D characters and the depth of the scenery is master class
Souvenir : "House Foods" commercials directed by Hayao Miyazaki (2003) & Yoshiyuki Momose (2004) at Studio Ghibli
This might be wrong.
If you look carefully at the original layout, there is no movement that breaks through the curtain, and it is not connected to the scenes before and after it.