title: Prevent Recyclerview from intercepting scroll/touch events
body: <p>So I looked everywhere for this and I've been stuck for a few hours; I really need the help! </p>
  
  <p>So I have a (fixed size) recyclerview inside another scrollview, which is the nestedscrollview. I also have the CollapsingToolbarLayout on this view. The problem is that when I scroll the entire view and I'm on the recyclerview, the CollapsingToolbarLayout doesnt expand/contract (it only does so when the CollapsingToolbarLayout has contracted, and I'm scrolling down and so it does expand).  Otherwise, CollapsingToolbarLayout never reacts to scroll changes when Im on the recyclerview. I tried intercepting the touch and returning false and it nothing works.</p>
  
  <p>Any advice?</p>
  
  <p><strong>UPDATE</strong></p>
  
  <p>A good example of what I'm trying to do is Whatsapp's profile activity, where it has the CollapsingToolbarLayout and if the profile is a group, it shows the list of users in that group. That's exactly what I'm trying to do here, but when Im scrolling inside that user list, it doesnt scroll the entire view (recylcler view is intercepting .. )</p>