Dream Zanarkand

[Slothy]

I guess my thing has always been--and I could just be overthinking it--I don't understand how DZ is a dream, but exists in the physical, to the point where people can travel there back and forth (if they are aware of the location.)

Helps if you think about Dream Zanarkand as less of a dream and more like an Aeon (or perhaps more accurately, thousands of Aeons).