Rishi took the Twitter route to share his excitement with his fans.
He wrote: "Coonoor. Great to connect with "The Naseeruddin Shah" last night after we worked in Khoj 26 years back. Easily amongst the greater actors (sic)"
And to clarify that Naseeruddin was just a "guest" in Coonoor and not a cast member in "Kapoor and Sons", the 62-year-old actor posted another tweet shortly after.
"Correction. Naseer is a guest in Coonoor not to be mistaken as cast member of #kapoorandsons. However,we hoped that would have been true," read the tweet.
Directed by Shakun Batra, "Kapoor and Sons" also features actors Alia Bhatt, Sidharth Malhotra, along with Pakistani actor Fawad Khan.