How did Śrī Caitanya Mahāprabhu synthesize the views of the four vaiṣṇava teachings?

By showing that the Lord is seated in the hearts of all beings both living and non-living and He is guiding everyone onwards towards their destiny and we must follow Him according to our faith we are born with and not to change our religion or change our dress or makeup but to surrender to the Lord seated within our hearts and see Him in the hearts of all as the One and only Creator, Maintainer and Destroyer