To get the transmission into overdrive, plenty of points have to be connected and disconnected by clutches and bands. The Earth provider will get linked to the torque converter housing by a clutch. The tiny Sunlight gets disconnected with the turbine by a clutch to ensure that it may freewheel. https://gearboxauto97418.onesmablog.com/not-known-details-about-gearbox-auto-74398818