A door system is provided for a motor vehicle. That door system includes (a) a first independently operable first, door, (b) an independently operable second door, (c) an articulating door interface carried on the first door and (d) a guide on the motor vehicle body. The guide displaces the articulating door interface between a door sealing position when the first door is closed and a door opening position when the first door is opened. A related method is also provided.