Errors in geography: Shahid leaves Mumbai in Punjab Mail from Chhatrapati Shivaji Terminus (CST). Punjab Mail takes the central route and reaches Delhi via Itarsi, Bhopal. But in the movie, the train takes the Western route via Ratlam, Kota.
Continuity: At the station when Geet buys a water bottle, she takes a very small sip in the beginning. However, after a chat with the shop-owner, a considerably larger amount of water is missing from the bottle.