How many movies have Sander Schwartz and Tim Maltby collaborated on?

They have worked on 3 movies together! Their first movie together was Batman: Mystery of the Batwoman (2003) while their highest rated movie together was Bah, Humduck!: A Looney Tunes Christmas (2006). They have not worked together since Bah, Humduck!: A Looney Tunes Christmas (2006). They are most known for their animation films together.