Small and short level but with some nice touches and an option to make it even quicker. Spoiler: Shortcut with good timing can make P autopilot down over the pushed ball.
I think there's another trick used here that you didn't mention? The swap wasn't easy and the restarts were starting to get annoying as B kept landing on the ball with R on the slider. This happened at both swaps. The game play was straight forward but the execution was not so. Overall, I did enjoy the level so thanks.