I have had similar experiences more than once. Most recently, I finished a short session of blackjack with a 5 digit win and after cashing out I decided to play a hundred in a VP machine. This lady sits down 2 machines away, not putting a cent into the machine but looking at the rules screens, and starts a conversation. It was like, hello are you are moron or something? She asks me I only play machines and I honestly tell her I mostly play blackjack. And then she goes, "Oh do you count?" She talks about Revere and Thorpe, and I tell her I never heard of them and of course tell her you can not count a six deck shoe unless you are Rainman. Then she gives me a, "you really don't count?"
Two days later I return to the same casino during a different shift and again win at the tables (much smaller amount this time) and repeat myself after cashing out by going to the same VP bank. A few minutes later, she shows up, says hi and asks me if I played blackjack today. Lied to her and told her I got my butt kicked and she really confused me by telling me that is why I should learn to count. I did return the next day but reversed myself by playing VP first and did not see her that day.
Today, the guy who comes up behind you at the table is not that common. Some casinos have a pit character that I call the giver of the evil eye. He will tend to stand 5-10 feet from you and give you his death stare as the cards are dealt and you make you plays. Often these guys are simply looking for your reaction and are the givers of extreme heat. I engaged one of these characters in a 3 shoe long conversation while keeping the count perfectly. The first two shoes ran fairly even between TC+2 to -2, but the third shoe went down big, I cut the conversation with the mention of a lunch date and must have convinced him that I had just been lucky earlier or had stopped counting because of his presence. After that time, this guy did remember me whenever I returned, we would talk continuously (we do share some interests) and I would bet with the count. I could only guess that he did not count himself, could not really recognize a decent counter, but he would intimidate and if you reacted as someone with guilt he would back you off.
Anyway, often you can not be sure of things. Those are times that your knowledge of how a certain casino does things are important but if you do not know much about that, your instincts should rule. Just might have been time to meet your lunch date.
ihate17