Evrabonzz
Well, in general, the Scandinavian worlds are not really worlds, they are just different regions of the same space, the only worlds that are separated in mythology are the World of Fire and the World of Fog (Darkness / Ice / Cold) which are actually not separated either, in general it is difficult, there are even theories that, for example, Jotunheim is actually a designation for northern Russia and Finland, and so on.