It's Open But...

Spoiler: Tricks Used

1. Ball on wedge
2. Offset blocks. Those stairs look TOA-ble but offset blocks will help you press the stairs once. B will then fall as desired.
3. Autopilot
4. SSS

Spoiler: Video Solution

...
its open but why
"We couldn't walk between metat gate?"
because they are compressing each other.

my opinion, these stairs are unnecessary,
they reduce the punching gameplay to cross
the compressing metal gate at middle.
my guess you added them for simmetry look.

and there are several spot
to do boggie bot bug at ex-place of zapper
and tripping on air to reach winblock.
after all balls have been pushed.

I've made it after 11 attempts but not same as your video.
I dind't walk on the top of metal gate.​

Two things that I didn't like - the one way slider and the motor bump back. Just swiping the screen to rotate it can lower the slider causing a restart - so why have it? The motor bump back didn't work well and it took over 30 pushes to get thru - it started to get annoying. The rest was great and I enjoyed it.

It was different and i liked blasting through the narrows. Lots of different gameplays.

Super original & super FUN...Thanks for sharing @P_simorf

Very impressive with back and forth.

♡