How many movies have Hideaki Anno and Satoshi Iwataki collaborated on?

They have worked on 2 movies together! Their first movie together was Mobile Suit Gundam: Char's Counterattack (1988) while their highest rated movie together was Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014). They have not worked together since Space Battleship Yamato 2199: Odyssey of the Celestial Ark (2014).