Viewpager with ObservableScrollView with Viewpager

[YJArc]

I have a viewpager with fragments... one of the fragments has an observable scroll view with a viewpager and tabs. inside it i have a recyclerview.
However when scrolling the recyclerview the scrollview is never pushed up along with it until you reach the top of my header... How can I make it so the observable scroll view intercepts the touch until I reach the top. from there the recyclerview can handle touch. I see there are a couple of examples with viewpagers here but I'm having difficulty understanding them and I need a viewpager with an observable scroll view with another viewpager.

edit: this has a parallax effect on the tablayout for the viewpager inside observablescrollview

[YJArc]

Using the FlexibleSpaceWithImageWithViewpagerTab2Activity sample code I was able to do as i requested (having Viewpager with Scroller with viewpager with recyclerview)
However, the emulator crashes consistently after some scrolling.
Will update if I find the cause

EDIT: After some searching, there are easier/cleaner/robust methods to do this using android desgin libs. particularly: http://blog.iamsuleiman.com/parallax-scrolling-tabs-design-support-library/