Swamin
PranAms. With your permission, AdiyEn wants to post this message to Swamy G.Subramaniam.
AdiYen’s opinion is – the answer already lies in Bhagwan’s own words, as below. Please relate this to your question and I’m sure you will find an answer.
[Bg. 4.1, 4.2 & 4.3]
imam vivasvate yogaà
proktavän aham avyayam
vivasvän manave präha
manur iksväkave ’bravit
evaà paramparä-präptam
imaà räjarñayo viduh
sa käleneha mahatä
yogo nastah parantapa
sa eväyam mayä te ’dya
yogah proktah purätanah
bhakto ’si me sakhä ceti
rahasyaà hy etad uttamam
Here the Lord informs Arjuna that this system of yoga, the Bhagavad-gitä, was first spoken to the sun-god, and the sun-god explained it to Manu, and Manu explained it to Iksväku, and in that way, by disciplic succession, one speaker after another, this yoga system has been coming down. But in the course of time it has become lost. Consequently the Lord has to speak it again, this time to Arjuna on the Battlefield of Kurukñetra.
Lord tells Arjuna that He is relating this supreme secret to him because Arjuna is His devotee and His friend.Here the Lord clearly tells Arjuna that He is making him the first receiver of a new paramparä (disciplic succession) because the old succession was broken. It was the Lord’s wish,therefore, to establish another paramparä
in the same line of thought that was coming down from the sun-god to others, and it was His wish that His teaching be distributed anew by Arjuna. He wanted Arjuna to become the authority in understanding the Bhagavad-gitä.
So in AdiYen’s opinion, it may be possibile that there could have been a breakage of disciplic succession after Lord spoke to Arjuna ( may be generations after Arjuna ) .Hence due to the broken Parampara,
the PeruMal’s teachings may not have been carried for many hundreds or thousands of years until the Bhagavad Gita was re discovered may be some two thousand years back.
With Respects
AdiYen Raghunathan