Chicken Restaurants near Porterville

“Can someone tell me why when you order in the drive-through. When you get to the window to pay for your order, why do they make you reverse back to the first pole, not in sight of the window? I got my food. This is my favorite place to go. This happened to me a few times in their drive-through. I just think it’s a delay and im curious why they make you do that..“