How many movies have Carlo Bosi and Franco Zeffirelli collaborated on?

They have worked on 4 movies together! Their first movie together was Madama Butterfly (2004) while their highest rated movie together was Turandot - Puccini - Live from Verona (2011). They have not worked together since Arena di Verona: Il Trovatore (2020). They are most known for their music films together.