At least for me if there isn't a confirmation message there isn't NAP. That's something quite importante you (or him)need to have somehitng to quote and say: this is what I said and here is his agreemnt. Until then nobody has broken a NAP.
I also do not consider that you have to give him another turn: you informed him even without having a NAP (from your point) why should you give him another turn? You are honorable, not stupid
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