Why did A-list poiticians avoided the RSS conclave?

Coming ahead of the general elections, Mohan Bhagwat's elaborations on the RSS’s vision of India hold new possibilities for right-wing politics, which in recent times has become straight-forward and cuts directly to the chase. So in a first-of-its-kind outreach, the RSS had said that they have sent invitations to all the national political parties for the event. But majority of the A-list leaders from various parties had opted not to be part of it. Why?