Connections

Background music is very similar to that of Company with many tunes used in both the films.

A song plays in one scene

Theme song from Company (2002) is playing at a dance-bar when Ajay starts his trail of vengeance

recycles part of song "Khallas"

Kajol reveals that she likes Ajay's performance in the film the most.

the movie is spoofed in a dialogue in the end. Also a song from Company is referred to in that dialogue

During the film-shoot scene, the director acts like Karan Johar did when directing K3G. The film they're shooting in this scene is as if they were shooting K3G as well.