Let's get Schrödinger’s cat sorted first. It was only illustrative to invoke thought. BUT

The feline is Dead OR Alive

It isn't AND - it is OR

It might be waving, but until you open the box, you won't know. When you open the box the wave collapses, so you won't ever know! But its live ability will be known.

On the subject of quantum gravity, can I posit that once you get down to micro dimensions, you have atoms/molecules - there's the starting point for your graviton.