Double Savings..update

So, I went to Kroger and purchased the Febreeze Noticeables kit. I also purchased the candle. They scanned my Kroger card, which gave me $5 off the Noticeable and $2 off the candle. I handed him the paper coupons for $5 off the noticeable and $1 off the candle. It was beeping and he went to customer service and asked and they told him it was fine. He manually entered both. So, I know it is "legal". But, the only reason it beeped, I think, is because the $10 off the Febreeze Noticeable was giving an overage. I do not think it beeps if there is no overage....just a little tidbit! It did not beep when I made my purchase last night, and it was a simple deal.....no overage!