How many movies have Gosho Aoyama and Masato Sato collaborated on?

They have worked on 3 movies together! Their first movie together was Detective Conan OVA 04: Conan and Kid and Crystal Mother (2004) while their highest rated movie together was Detective Conan OVA 06: Follow the Vanished Diamond! Conan & Heiji vs. Kid! (2005). They have not worked together since Detective Conan OVA 06: Follow the Vanished Diamond! Conan & Heiji vs. Kid! (2005).