HMM...

Is it correct that two sliders are useless?

I see there are two paths to go back. You can use the big stairs to go back.

Yes @Block builder but when You throw the ball You can choose, and if You first pick the Star, and the throw the ball, you'll probably go by the sliders, but if You first throw the ball and then the Star, you'll probably go by the stairs, but one needs the other one.

yes, two sliders are not needed

Spoiler

I think I did it the intended way and found this level to have much more Adventure and interest, and a little bit of timing. Lots of fun and thank you very much