Conventional Hindu teaching that Brahman is omnipresent, omniscient, etc..
Please show me this "conventional Hindu teaching."
See my post #33 to the OP, if the OP is not enlightened, then how can he seriously wonder why he can't know what is happening on the other side? Wrt to an enlightened human, during moksha, there is no other side of the universe, all is one, omnipresence prevails.
Again, I not sure you have a complete understanding of what enlightenment is. What enlightened person told you this?