A game that really well fits the theme! I think the central mechanic is one that is a simple rule that could lead to a lot of emergent mechanics or outcomes, which is always a good thing in my book. Gives me the feeling of "control two characters on the same map" where you can adjust your relative positions by smacking one against a wall, but here you have direct control - which is what I think opens up a lot of the possibilities. It becomes more of a game of map positioning than character positioning, in some senses.
I don't know any good fix, but I think the views for top and bottom were a little constrained for me - I sometimes had a hard time conceptualizing a plan because I couldn't quite see enough of the map at one time to fully mentally map how the spaces could interact. Given at the beginning and end you can see the "tapes" of the levels being offset when you sync / desync, I think an option to zoom out would both be aesthetically cool but also help for those who think more visually than abstractly. Then again, this all just could be the fault of my chronic inability to focus so I deliver a singular grain of salt to take.
Overall had a really fun time with the game!