In the proposal for `cascade mixing' one mixing particle, such as the B0 turns into another, such as the K0, via a decay (J\Psi). Viewed as a function of the two times involved this is a novel kind of`regeneration'. Some amusing quantum mechanics and as well as a novel means of access to parameters of the mixing systems are involved.
We discuss how this should be realistically possible at the new super-B projects and some of the predictions.