My husband and I were recently in Rome and we went to a supermarket to buy a couple of things. While we were waiting in line, but after we had put our items on the conveyor, an elderly lady (seh was probably close to 90) kind of backed into the line, and put her items on the conveyor behind ours. She was standing in front of us, however. There was clearly a line behind us. The cashier had already started to ring up our order, since our items were on the conveyor before hers, but she just stood in front of us. She wouldn't even let us around her to pay. I'm just wondering if we missed something and were rude somehow. Any ideas?