Sunil Bharti Mittal-led Bharti Enterprises and N Chandrasekaran-chaired Tata Group are holding discussions to merge their financially troubled direct-to-home (DTH) businesses, Airtel Digital TV and Tata Play. In a statement to exchanges last week, Airtel said the development is “at a discussion stage only”. The move by the two major players has come at a time when DTH giants are fighting a survival battle amid the DTH industry is going through uncertain times.