No Concept

May be I should ask what tricks are involved before I say that I'm stuck.

Spoiler: Tricks

I see low ceiling and an auto pilot at the end.

Edit - How does R push the upper mechanism and then get back down to push the second one? B can't push the end mechanism far enough.

EDIT - Cancel last - got it.

Good misdirection level. Having a trick list would have helped so I'll provide it.

Spoiler: Trick List

Tricks in order of use:
-low ceiling auto pilot
-auto pilot
-low ceiling auto pilot
of course there's a couple of R mechanism pushes too and
one bot slider push

Superb level. Took a lot more time than usual to find the gameplay and was holding my breath for the last autopilot.

No clue ...

Thanks @Meko Guy for make a tricks list

@Don G Rowe clue as @Meko Guy said.

Spoiler: first step

first step B must ride R head, Put R next to stone pillar, B doing autopilot claustrophobia to the stair, after that everything is easy step

It is very tricky to get R back to the starting point but it is obvious that it is a necessary step. The autopilots are a bit unusual.

Spoiler

To me, this is just extremely unstable. Had the right idea yesterday based on your hint, but can barely land that autopilot once, let alone twice.

@Don G Rowe . Level is very stable on my ipad. I thought the hint by @DDD was a bit vague. So here is a video

Spoiler: Full solution

That's what I was trying to do, but

Spoiler

On my Android, B leaps into the water 19 out of 20 times and cancel taps strand him on bridge.

@Don G Rowe . Maybe keen players like us need Apple and Android devices! Shame you couldn’t get to enjoy the level.

Apparently. Here is the spectacular but ineffective result I get ...

Spoiler

@Don G Rowe that's video is funny sorry for unstable maybe different device different stability. In my device B jump very stable.
Btw have you try to tap one grass front of B?
Because i'm always tap that grass, not second grass

@ridgerunner - I did it the same way - the only difference was my B didn't stay on the win. My B jumped over the win, winning and then onto the surface.

@Meko Guy .My B stayed on win because i tapped RedX.

Very nice!
Lots of fun, thanks!