Complex sentence: During the film he asked both Raj Kapoor and Waheeda Rehman to act in natural style, this was important for the film as Raj Kapoor through the filming managed to avoid his usual mannerism, though he did play his usual simpleton in the film too.
Split into simpler sentences: During the film, he asked both Raj Kapoor and Waheeda Rehman to act in their natural style. He felt it was important for the film that Raj Kapoor should avoid his usual mannerism, even though he was playing the role of a simpleton, for which he was already famous, in the film too.