How many movies have Biswajeet Chatterjee and R.V. Shrikhande collaborated on?

They have worked on 2 movies together! Their first movie together was Bin Badal Barsaat (1963) while their highest rated movie together was Yeh Raat Phir Na Aaygi (1966). They have not worked together since Yeh Raat Phir Na Aaygi (1966).