How many movies have Herbert Burns and Sean O'Malley acted in together?

They have worked on 2 movies together! Their first movie together was UFC 250: Nunes vs. Spencer (2020) while their highest rated movie together was UFC 252: Miocic vs. Cormier 3 (2020). They have not worked together since UFC 252: Miocic vs. Cormier 3 (2020).