Are custom protocol methods supposed to work in ANY view controller?

I have a delegate method that works perfectly between a child view and its parent view.  However, I have another delegate method that does not work between another child view and the just mentioned child view. 

 

It has always been my belief that a delegate method should work between any and all views, not just between child view’s and their parent views.  If this is correct, then my code is flawed (shudders …).

 

Any comments or suggestions will be most welcome.

 

Thanks.

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