It is to be understood, however, that as Arjuna was fortunate enough to understand Kṛṣṇa directly, so, by the grace of Vyāsa, Sañjaya was also able to hear Kṛṣṇa directly. Actually there is no difference between hearing directly from Kṛṣṇa and hearing directly from Kṛṣṇa via a bona fide spiritual master like Vyāsa. The spiritual master is the representative of Vyāsadeva also. Therefore, according to the Vedic system, on the birthday of the spiritual master the disciples conduct the ceremony called Vyāsa-pūjā. (Bhagavad-gītā 18.75 Purport)

YouTube : https://youtu.be/gKU3WEs0qE8

For more videos please visit fanthespark.com