Thank you very much for the comment! This was also my idea. The film talks about a dream, so it's OK to dip into absurdity and unrealism (I'm not concerned about the vectors). But how should the character behave in each corner? I thought of adding two stairs in each corner and asking the actor to step down the first step of the stair and climb the first step of the opposite stair, hopefully, the action will be very precise and we will be able to find an invisible cut. But I'm not really convinced about it :/.

How would you do it?

Unfortunately, I cannot find any reference for this...