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?
With a gun, I assume
But to be serious the same way they shot freaky Friday and all those other twin movies. One person two different scenes splice it together