Third party feedback also suggests the presence of Singapore Airlines as a significant competitor of Air India and Vistara along the overlapping air passenger transport routes (Singapore-Mumbai and Singapore-Delhi) and the overlapping air cargo transport routes (Singapore-India), it mentioned. "However, the CCCS needs to assess further the extent to which Singapore Airlines competes with the merged entity along these routes, given that Singapore Airlines is a joint-venture partner with Tata Sons in Vistara and a prospective partner with Vistara in the Commercial Cooperation Framework Agreement," it noted. The CCCS stated it also needs to assess further whether the competitive constraint from other airlines such as IndiGo would be sufficient post transaction, it mentioned.