Bollywood and Soviet film industry have also made some films together in the past. More closer look gives you a feeling that Bengali film industry was very much connected to Russian cinema. Tarkovski, the great soviet movie maker, was a big example to lot of directors of Bangla movie those days and as I hear also today some student in Satyajit Ray Film Institute set his films on pedestal for themselves.
This is something that you would gomovie not find for example in watching Kannada movies online. They represent a bit different India all together.