Christopher, YOU are really AWESOME. Thanks so much for your patience in trying to understand and explain my question. I know my questions can be a little convoluted. I will likely have have a months worth of study from all the links you provided, but it will be good to try to grasp the material.

Your explanation of the modal interchange is, I think what I was trying to explain. It is the similar transitions between chords that did not have a common key that confused me. I also learned the rifts from stepping stone in the process of understanding the relation. (Far Out, Man) Hey, I'm old too.....LOL

Thanks again!

Kevin