That's what these forums are for.
Assessors are like referees: Some are fantastic, some at least try really hard and some wouldn't know what day of the week it is and don't particularly care to find out. Don't assume somebody knows what they're talking about just because they're holding a clipboard - I could write quite a long list of the utter stupidity I've seen/heard from assessors.
For each piece of advice - whether it's from an assessor, a colleague, online, or even a non referee (seriously, 2 of the best pieces of advice I've received have actually been from team coaches!) - take it on board, consider it, let it simmer, analyse it then draw your own conclusions. somebody tells you something about the law, check it yourself. If it seems to contradict or not sit in the law, or doesn't fit with what you've previously heard, then you need to make a decision - do you throw out the new knowledge or the old? What has the presentor of new knowledge said/done to make you believe that the new knowledge is more valid? If you're finding that conflict in advice, then it's suggesting you need to investigate further, ask more questions, then make your decision.
Make all the right noises to the assessor, but decide later if your best way forward is simply to forget everything he said. But at least consider what was offered and make sure you're making an educated, considered decision in that.
I know what you mean
@Jacko that's why I've said the OP lacks the context to deal with this correctly. We will all have a slightly different picture in our heads.
I would think that if no attacker is mentioned then there's no reason at all to assume that he broke up an attack
If we're going to make assumptions or extend a question to another possibility, we need to clearly state those.