The moment in the coupling section, the returning fluid will reverse course and now rotate during the course in the impeller and turbine, an effect which can try and ahead-rotate the stator. At this stage, the stator clutch will launch plus the impeller, turbine and stator will all (kind of) https://torqueconverterclutch54184.blogsuperapp.com/34820801/torque-converter-clutch-an-overview