[saffronleaf]

^ I agree with you to a significant extent, except that I think KWCG is pretty distinct. With the greenbelt, it's hard to see it as an extension of the GTHA. I think the area between the greenbelt and the lake (i.e., Toronto, Hamilton, Oshawa, etc.) will definitely meld into one large metropolitan region. But I think the greenbelt serves as a pretty good psychological and physical barrier.

That said, if HSR comes, then you'd probably be right.