How many movies have Héctor Ríos and Luis Cornejo collaborated on?

They have worked on 4 movies together! Their first movie together was Érase un niño, un guerrillero, un caballo… (1967) while their highest rated movie together was Jackal of Nahueltoro (1970). They have not worked together since The Witnesses (1971). They are most known for their drama films together.