I always play at the same store and have been doing so about twice a week for the past couple of years. I play long sessions (like 6-12 hrs) at a time. I have never received any heat but yesterday one of the PBs commented on how I always know when to increase my bet. I usually spread 1-8 or 1-10 playing all green. He asked me if I knew how to count and that he doesnt care if I did know how to do it. Obviously I had to play dumb and say it is too hard for me and I can barely add up to 21. Was he fishing or just genuinely not caring. It was an EC store btw.
There's not enough to go on to fully determine his intentions. Good job on playing dumb, btw.
Keep playing until he says something again, or u get heat from someone else, then re-evaluate. Why back urself off?