Lord Nityananda is none other than Balarama or He is also Krishna but is in the mood of the servant of Krishna. He is Krishna but this time as Sevak Bhagavan – Krishna as Lord Chaitanya is the Lord who is served. However Nityananda is the servant thus Nityananda is known as Adi-Guru – the Original Guru because He teaches how to serve , that is Guru. Guru is teaching how to serve Krishna that is the business of Lord Nityananda.
Then the Lord expands Himself further from Balaram into the various Vishnu avatars because in these Visnu avatars the Lord gets involved in this material energy. He gets involved in the process of creating the material worlds. We know that Maha Visnu is lying on the causal ocean and that from the pore holes of the body of Maha Visnu the various universes appear. Thus Maha Visnu is directly involved with the material energy.

In this way we see through His expansions Krishna is dealing with the material nature or the living beings who are conditioned. He Himself is simply absorbed in pastimes and exchanges of rasa with His devotees but as soon as one turns to Krishna then He can personally deal with anyone. So Advaita acharya is on the very right our left – elderly with a beard He is is Bhakta Avatar – He is the Visnu expansion. He is none other than Maha visnu or Sadasiva.(03/2009-Leicester,UK)