At this time, the fluid returns from the turbine, entering the pump previously relocating in exactly the same direction because the pump, Hence the stator is not really necessary. Slippage consumes energy during the coupling stage. Locking the converter shell to your turbine shaft helps prevent this slippage from developing. https://torqueconverterclutch75296.mdkblog.com/40100151/detailed-notes-on-torque-converter-clutch