I get the impression (though I'm by no means an expert) that actual wax just sort of sticks to itself. Sort of like dipping a candle. Except in this case the wax is softened by chemicals rather than heat.
I've always felt like I could layer real wax on pretty thick if I just kept at it. I think you can build up a pretty substantial layer of actual wax (like paste wax, maybe not with a liquid). I don't think it adds much more protection, though as it is easily removed since it is just piled up there.
This is one reason I like real wax as a topper in the winter. It's easy, and I feel like it can just stick on top of whatever polymer is on the paint. And it can leave a thicker protective coating, even though it still won't last all that long.
But this is mostly just gut feeling type stuff. It's also an effort to keep this thread going as the questions raised are very interesting....
