Krishna's Supremacy

Having downloaded an internet copy of Sri Jiva Gosvami's Krishna-sandarbha, I've skimmed across the first anuccheda or so without having time to read it carefully.

As far as I can see, Sri Jiva begins by explaining the supremacy of 'Bhagavan'. I assume that later on he will argue that Krishna is identical with Bhagavan, and that this is the foundation for the GV doctrine of Krishna's supremacy.