Salman Khan and Aishwarya Rai were shooting at the location on two adjacent sets at the same time.
Dressed as a hunk in tees, denims, and a keffiyeh around his neck,
Salman Khan, walked in after 2 pm to shoot for the promotional video of Bigg Boss 4 which he is going to host.
Aishwarya, on the other hand, was already at the location shooting for Akshay Kumar’s show Master Chef India. On the show, Akshay gifted a special cookery book to Ash.
Perhaps Ash and Salman knew of each other’s presence as none of them ventured out of their sets for fear of bumping into each other.
Salman stayed put on the sets and just doodled on his sketchbook.
Source:http://bollywood.celebden.com/2010/09/salman-and-aishwarya-missed-bumping-into-each-other/