Both Balakrishna and Nagarjuna used to be good friends like NTR and ANR, until a few years back when TSR organized a function to felicitate ANR. The invitation card didn't have Balayya's photo and just before the event, Akkineni family realized their mistake and sent some reprinted cards to Nandamuri family.
Annoyed, Balakrishna didn't attend the event and he was angered more, when Nandamuri Mohan Krishna, who attended the event was ignored. Since then Nagarjuna and Balakrishna have been avoiding each other even at public events.Though Nagarjuna tried to sort out the differences with the help of Ashwini Dutt and Harikrishna, Balayya was adamant.
Hope the differences between the two star heroes, Nag and Balayya, will be sorted out and we will see them together soon.