What would happen if both the Empires survive? the (smaller) western Empire in Spain, and the larger Eastern Empire in the obvious location.
would Hispaniola (western Empire) voluntarily give up its independence to be ruled by Constantinople?
or would they work together to reunite the Roman Empire, with Rome as the capital?
what would the possible effects be?
it has been an idea of mine for quite a while, but i dont know enough to make it plausible.