Aishwarya Rai Bachchan will bring back the 70’s chemistry of some bollywood couples in one of the songs from the film ‘Action Replay’ in which she also wants to show her Father-in law Amitabh Bachchan's on screen chemistry but she's confused whether she should show Amitabh-Jaya Bachchan's chemistry or Amitabh Bachchan and Rekha's chemistry