What's with flavor shots?

On our new walking route for Sunday's Dolores and I stop by Dunkin Donuts to get our morning brew on the way home. She ordered her medium coffee selecting Hazelnut. He poured, covered the cup and gave it to Dolores. I asked for my small Dunkin Dounts coffee and he poured from the same coffee pot. Surprised by this, I asked: didn't you just pour her Hazelnut from the same pot? And if you did what did I get? Hazelnut or regular? "Oh, you got regular," he said. "I put a shot of Hazelnut in hers before pouring." Not one to make a scene, I said thanks, took my change and left. Outside I find out Dolores' coffee doesn't really taste like Hazelnut. Now I know why. And this is a company that sells flavored coffee beans or ground coffee in bags by the pound but can't brew their own flavors? I may be showing my coffee naivety but has anyone else noticed this? Is anyone else bothered by this?