According to Osho, Vivekananda’s samadhi via Ramakrishna was authentic only as a preliminary glimpse—a psychic border experience where mind ends and soul begins. Ramakrishna, fearing a full plunge would make Vivekananda ‘useless’ for his mission, deliberately kept it shallow. Unlike Buddha or Jesus, who could function after full awakening, Vivekananda received just a fleeting, elementary taste, hence it faded and did not transform him completely.
It was a real but tiny peek into samadhi, kept shallow by Ramakrishna so Vivekananda could still work in the world.