I describe it as two separate screens because I can't really overlay them (imagine putting one monitor in front of the other and trying to see through the first

I describe it as two separate screens because I can't really overlay them (imagine putting one monitor in front of the other and trying to see through the first one; not going to happen), but otherwise don't have much issue imagining things. Another good comparison might be that my eyes are 4k but my imagination is like 480p.