I'd be interested in understanding how the CB could ever hit the OB, when they are both traveling on a straight or similar path and no rails are involved, and there isn't a double hit on the CB. There are some really simple physics involved here making that quite impossible. The CB loses energy when it hits the OB, the OB gets that transferred energy. If the CB hits the OB square on and the CB isn't rolling. It stops dead. The two objects weigh the same. If the CB hits the OB with top spin, it momentarily stops just as it would if it were skidding, then the top spin causes it to roll forward again. There isn't a circumstance where that top spin would cause the CB to ever catch up and hit the OB.
Well, actually, there is a trick shot where you forward masse' the cb and it actually goes around the ob and goes into the pocket before the ob goes in.