We flew Air France recently (our 2nd trip with them and our last) from Boston to Warsaw. At Charles deGaulle AP, we had to make a connection to another flight to Warsaw. We missed that flight! We had to clear immigration and go through security afterwhich we headed to the gate to find the flight had left 10 minutes early because passengers were loaded on buses. I have never heard of clearing immigration and security on connecting international flights - is this a new rule?