Can a UICollectionViewLayout have supplementary view in front of cell?

Can a UICollectionViewLayout have supplementary view in front of cell?

I'm aiming to have a static header with the cells passing underneath as
the user scrolls. I've created the functionality I'm looking for, however
if the supplementary views have a high zIndex than the cell, it blocks the
didSelectItemAtIndexPath: method.
Is there a way to work around this?
Here's an example of what I'm after;