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As usual it was a really intelligent level with a very nice visual design.
But this time I decided to remove one star because first step used a very tricky combination of steps and there is a big shortcut so lower ball step can be avoided:

Spoiler

You can use both bots at the end to get the win, one bot will force turn right to the other so there is no need to use lower ball to block a tile with R's head.

Thanks for sharing!

I agree on the starting tricks. But as a logic puzzle it was fun.

I got it but the opening move is unstable as B would get the circle tap and sometimes just stand there shaking but not go in. The rest was great logic. Thanks

After B’s refusal at the gate for no great reason in that difficult first move, i decided i would try a maximum of five times. Got it successfully 4th time luckily and the rest was easy as i had already experimented. I also did not need the lower ball. Very cunning start and just a pity it doesn’t work smoothly.

I did it using all the balls and I think that this is a great level!! Complex,challenging,as usual!! Thanks for sharing and excellent job @yuan

Later I'll do a movie cause I have doubts...as always

Well,this is my solution only using...

Spoiler: My solution

One autopilot and R's trick to turn P...
https://photos.app.goo.gl/ZB5nEVURRx8kzDPB3

Hope I did it right