How many movies have Ryuichi Baba and Yuichi Takahashi collaborated on?

They have worked on 2 movies together! Their first movie together was Gunbuster vs Diebuster: Aim for the Top! The GATTAI!! Movie (2006) and was their highest rated movie together. They have not worked together since The Irregular at Magic High School: The Girl Who Summons the Stars (2017).