How many movies have Ivo Knotek and Svatopluk Matyáš acted in together?

They have worked on 2 movies together! Their first movie together was Rohanův princip (1983) and was their highest rated movie together. They have not worked together since Plamen a dým aneb Tajné lásky a veřejné omyly poštovního úředníka V. V. (1983).