A bendalloy burner and a cadmium burner standing in the same place could potentially nullify some long-term drawbacks of the process of becoming a savant, like having to be in a bubble to feel normal, and the aging.
Another thing, if the fast bubble only cancels out the slow bubble where they overlap, then you could have a cadmium "ring" around you where everything that gets close is slowed down. This could be a cool move for Marasi and Wayne fighting together.