[Mike L]

ok then, where are you going to spot the ball? Because if you are not going to kill the ball due to forward progress, then I think you are going to have to spot the ball at the OOB spot. Is that what happens? I don't think so.
What appears to be happening here is for some reason, the casebook is attempting to trump rule 4-2-2 with rule 3-4-3 and I'm not at all convinced it should do so. You are ruling a catch because you find the receiver would have come down in bounds barring the action of B which has stopped progress and drove him OOB prior to being able to complete the catch by touching the ground. So, you have ruled a catch under an exception that also involves stopped progress. Rule 4-2-2 rules with stopped progress the ball is dead right at that spot. Clock stoppage at that point comes under the various 3-4 rules. At best you should only have a stopped clock that is going to start on the ready, you may have a running clock. But I still can't see, despite what the casebook says (because I think it is wrong) how you can give the receiver his progress spot and then also rule you have a live ball out of bounds.