Question about #2 - how much contact was there? Was it the same contact as in #1?
Everyone understands that contact on the arm as the shot is being released is likely a disadvantage to the shooter, and is most likely a foul. But that same contact after the shot is released doesn't affect the shot at all, so it is more likely incidental, especially if the shooter is able to land normally.
If your question implies more than enough contact to warrant a foul, and you're simply asking about penalty enforcement, then "never mind".
I just wanted to point out there are still a number of officials that call the same contact on the arm as a foul whether the shot is already gone or not.