As soon as in the coupling period, the returning fluid will reverse route and now rotate during the route in the impeller and turbine, an effect that can attempt to forward-rotate the stator. At this point, the stator clutch will release and the impeller, turbine and stator will all (roughly) https://torque-converter-clutch21851.yomoblog.com/40857444/torque-converter-clutch-an-overview