BillyMac wrote
Passed ball hits A-1 in the head and deflects toward A-1's basket. The ball is on the ring when it is touched by B-1. Official calls basketball interference, and awards the goal. Is the official correct?
You mean basket interference? Then, yes, he is correct.
For extra credit:
Passed ball hits A-1 in the head and deflects toward A-1's basket. The ball is on it's downward flight, above the level of the basket, outside the cylinder, has a good chance of going in, and the ball is touched by B-1. Official calls goaltending, and awards the goal. Is the official correct?
No. To be goaltending, it must be a try.