Phew! Let's call a break. There's enuff info here for people to wade through and conclude for 'emselves.

Maybe in a day or two I'll put up a diagram to illustrate an otherwise 1000 words. I've only persisted in the discourse
so far because it's not something that can be just left aside.

As Walter Concrete may have said, "Cementics can get in the whey!"

Are you happy to take a breaver?