Sri Bhaktivinoda Thakura
Srila Bhaktivinoda Thakura announced that Mahaprabhu’s prediction would shortly be fulfilled. He foresaw that all the Vaishnava sampradayas will be unified.
“In a short time, there will be only one sampradaya and that will be the Brahma sampradaya. All other sampradayas will find their conclusions in this sampradaya.”
Reference: Sajjana Tosani 4.3, ‘Nityadharma Suryodoy’