How many movies have Lino Banfi and Luciano Anconetani collaborated on?

They have worked on 4 movies together! Their first movie together was I 2 pompieri (1968) while their highest rated movie together was Song That's Playing In My Head (Zum Zum Zum) (1969). They have not worked together since On the Day of the Lord (1970). They are most known for their comedy films together.