How many movies have David M. Cowan and Elizabeth McMahill collaborated on?

They have worked on 2 movies together! Their first movie together was Green Lantern: Beware My Power (2022) while their highest rated movie together was Scooby-Doo! and Krypto, Too! (2023). They have not worked together since Scooby-Doo! and Krypto, Too! (2023).