Android issue with implementing flings in NestedSc

Question

I'm having a bit of an issue using NestedScrollView. My use case uses 2 NestedScrollView, a parent and a child. I have overridden the parent's onNestedPreScroll method to sometimes consume scroll pixels before the child:

@Override
public void onNestedPreScroll(View target, int dx, int dy, int[] consumed) {
    if (dy > 0 && getScrollY() < getScrollRange()) {
        int oldScrollY = getScrollY();
        scrollBy(0, dy);
        consumed[1] = getScrollY() - oldScrollY;
    }
}

I have also overridden the parent's onNestedPreFling to consume fling before the child:

@Override
public boolean onNestedPreFling(View target, float velocityX, float velocityY) {
    if (velocityY > 0 && getScrollY() < getScrollRange()) {
        fling((int) velocityY);
        return true;
    }
    return false;
}

However, I noticed that when the parent consumes the entirety of a scroll in onNestedPreScroll, the parent's onNestedPreFling is not being called.

From my investigation, it appears that if the parent consumes the entire scroll, the child reacts as if an ACTION_MOVE event with deltaY=0 has occurred. This causes the absolute value deltaY to be less than mTouchSlop and mIsBeingDragged would remain being set to false. Since mTouchSlop is false, no fling calculation is made when an ACTION_UP event occurs in the child.

Is there a different approach I could be using to get the fling velocity for the parent NestedScrollView?

NestedScrollView: https://developer.android.com/reference/android/support/v4/widget/NestedScrollView.html