Cradle separations (if they do happen by accident) are nothing like their real life counterparts.
I've had a bunch of them happen at random but they're incredibly uncontrolled and all over the place.
Normally one of the balls just jumps up while the other one stays put on the flipper and even if something close to that happens in TPA the ball doesn't bounce off of the one on the flipper with enough force due to the physics being highly inaccurate in that aspect.