How many movies have Erik S. Watland and Philip Hallre Sivertsen collaborated on?

They have worked on 3 movies together! Their first movie together was Svein and the Rat and the UFO-Mystery (2007) while their highest rated movie together was Thomas vs. Thomas (A Sensational Theory Regarding an Insignificant Life in the Multiverse) (2022). They have not worked together since Thomas vs. Thomas (A Sensational Theory Regarding an Insignificant Life in the Multiverse) (2022).