Regarding the disciplic succession coming from Arjuna, disciplic succession does not always mean that one has to be initiated officially. Disciplic succession means to accept the disciplic conclusion. Arjuna was a disciple of Krishna and Brahma was also a disciple of Krishna. Thus there is no disagreement between the conclusions of Brahma and Arjuna. Vyasadeva is in the disciplic succession of Brahma. The teachings to Arjuna was recorded by Vyasadeva verbatim. So according to the axiomatic truth, things equal to one another are equal to each other. We are not exactly directly from Vyasadeva, but our Gurudeva is a representative of Vyasadeva. Because Vyasadeva and Arjuna are of equal status, being students of Krishna, therefore we are in the disciplic succession of Arjuna.
Letter to Dinesh, 31 October, 1969