There are certain scenes which are having absolutely no sense,
like the one in which Naseeruddin Shah tells the policeman that his wallet is missing and mentions the things in the wallet and her wife's photograph twice.
Another one is when Anupam Kher calls inspector Jai Singh instead of Jimmy Shergill when they were going on a mission, and Anupam Kher tells something by mentioning Jimmy.
And there are many such small scenes in the movie which are absolutely irrelevant.