What's Thalapathy Vijay connection to superstar Rajinikanth's Darbar

Superstar Rajinikanth who stormed back to form with two back to back blockbusters in the form of Shankar's science fiction thriller 2.0 and Karthik Subbaraj's Petta has been busy with his next film, Darbar directed by AR Murugadoss. It is said that he will be seen in the role of a police officer (when was the last time we have seen him in such a role...?). Now, an interesting update cropped up about the movie. Director John Mahendran, the son of the legendary filmmaker Mahendran, is roped into the story team of the film and apart from that, he will be seen in a role. John Mahendran has previously directed Thalapathy Vijay in the film Sachein. Interestingly, the senior Mahendran had also acted in Rajinikanth's Petta.