The reason being Bhansali's protege Vikramaditya Motwane crossed over to Kashyap's camp to make Udaan with him.
Bhansali felt like Kashyap was poaching from him and there was a cold war between the two for a while. However, that changed recently due to Kalki's intervention. Describing how the patch-up happened a source says, "Kalki was doing some patch work for My Friend Pinto and Kashyap happened to land on the sets. Bhansali was also around and Kalki broke the ice between the two and made them talk. The two sat down and it felt like there was no major problem in the first place."
