Oh, I forgot to mention what the rules say. They are a little vague. This is from the rule book for AAP, page 13:
“The attacking player may find it convenient to resolve all combat in section 1 first, then section 2 and so on. However, this is not required.”
my friend’s contention is that it does not state that you CAN roll all dice at once and therefore it is against the rules.
Thanks