How many movies have Kôji Maeda and Shirō Sano collaborated on?

They have worked on 2 movies together! Their first movie together was Godzilla 2000: Millennium (1999) while their highest rated movie together was Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack (2001). They have not worked together since Godzilla, Mothra and King Ghidorah: Giant Monsters All-Out Attack (2001).