Singh had desired to contest the Lok Sabha polls from Barmer in Rajasthan but the party denied him a ticket. He then entered the fray as an Independent, an action for which he was expelled from the party last month.
Similarly, Advani was asked to contest from his traditional Gandhinagar seat in Gujarat against his reported desire to shift to Bhopal seat.
Joshi, who heads BJP's manifesto committee, interacted with Bhagwat in presence of senior RSS leader and its liaison man in BJP Suresh Soni.
Joshi discussed several issues, including seats the BJP and its allies are likely to win in polls, sources said.