I don't know if Retrohale means the same thing to every person. But, to me, and I've never given it a name, I have smoke come out my nose, as well as my mouth.
Much more profound flavors that way. Some folks like to let the smoke come out their mouth, and then they inhale it through the nostrils...that doesn't do it for me, and it gets more smoke in my lungs, which I don't want.
As far as cuban cigars, I think it is great tobacco, and that if they treated it like Padron and Fuente did, it would really add something to the table.