um, i can sum up what i believe as far as multiverse and the passage of gods and other spiritual beings. so, i think that although there is an unlimited amount of universes all different one way or another , some are accessible in the way you have described. others are not. maybe that is one difference that makes it an alternate universe. but anyway, so i believe that this universe in general is accessible by such spiritual entities/energies but not all universes are. ours might be. of course i really have no science to back any of this up at all. it just kinda fits sorta. oh um, if i didnt answer your question im sorry, please inform me and ill try again.