Spacing in the Setting

I am still a bit unsure of how far things are around the Wuthering Heights Estates. Towards the beginning of the book, I was under the impression that Wuthering Heights and Thrushcross Grange were on the same estate and that Thrushcross was like a guest home. However, it is later made clear that a different family (the Lintons) actually lived there earlier. Also, since it seems it is possible to get lost in the moors between the two manors, I would think the two homes are separated by at least some distance. But then I get confused again when Catherine (the older one) says she sees Wuthering Heights from her window in Thrushcross Grange. I don't know what to make of this all...