You are assuming there is "location" in a two-sphere Universe: there is no such thing because those spheres are all the Universe there is and their only "positi

You are assuming there is "location" in a two-sphere Universe: there is no such thing because those spheres are all the Universe there is and their only "position" is "not where the other is". But absent any observer (which is one of the main tenets of Medieval Philosophy: reality does not depend on observers) they are anyway two things and not one. They did not think of "position" as something but as a pure "reference" in the sense of "being relative to". Space as an existent continuum is a very modern thing.