Big Y shoppers, are you able to use a coupon for each item on BOGO and/or B1G2 sales?

I've used a coupon for each item at least three separate purchases in the past. I was shot down today (at a different store), perhaps because it was all I was buying and not part of a separate purchase. The manager came over and said I could only use a coupon on the item I'm "buying", not the ones I'm getting for free. I got no where with (nicely) arguing. They cancelled the order, no big deal, but I'm just wondering for working out future deals...

Chris

ive never tried that, but i know it works if its a coupon for $/off 2 and its a bogo