Three of the main characters were the same actor, and yet there are shots with all of them in the same scene. When I saw this as a young adult I didn’t even notice that Mike Myers was playing three roles and was genuinely dumbfounded years later when I found out.
How did they do those scenes so seamlessly?
That really helps by distracting the viewer away from the small give aways.
They also did a really good job with the interactions and editing so it flows smoothly.