Gary Anderson says Red Bull's rear wing is not the main cause of Max Verstappen's offs.

Anderson argues Red Bull's problem comes from the car's aerodynamic working window, not mainly from its flip-over rear wing. He says airflow may not reattach immediately when the wing shuts before braking.

The FIA is comparing rear-wing styles used by Red Bull and Ferrari, including conventional DRS slot-gap concepts and flip-over versions. Anderson links the issue to Verstappen's Austria qualifying crash and Silverstone race off.