Srivasa Thakura is understood as tatastha-shakti, a marginal energy of Bhagavan, Krishna in person. Devotees who are headed by Srivasa Thakura are described as 'parts' of transcendental body of Sri Caitanya Mahaprabhu (his eyes, ears, hands, disc/cakra, etc.).
Srivasa Thakura is viewed as tatastha-shakti, a secondary energy of Bhagavan, Krishna. Devotees under Srivasa Thakura are referred to as 'parts' of Sri Caitanya Mahaprabhu's transcendental body (his eyes, ears, hands, disc/cakra, etc.).