How many movies have Bart van Rijn and Kathleen Warners collaborated on?

They have worked on 2 movies together! Their first movie together was Sara Kroos: Zoetgevooisd (2007) while their highest rated movie together was Micha Wertheim: Voor Gevorderden (2008). They have not worked together since Micha Wertheim: Voor Gevorderden (2008).