How many movies have Bart van Rijn and Donald Westerhuis collaborated on?

They have worked on 2 movies together! Their first movie together was Van Muiswinkel & van Vleuten: Antiquariaat Oblomow (2005) while their highest rated movie together was Micha Wertheim: Voor Gevorderden (2008). They have not worked together since Micha Wertheim: Voor Gevorderden (2008).