I don't think there is any clutch between the ICE and carriage gear in the 2010-12 FFH. In this model, when you brake down a long hill over max EV speed, once the HVB is full, I think the gen provides torque coupling from the wheels to the ICE to spin it and cause braking. The torque split is always the same determined by the CVT geometry but the power ( torque X RPM ) split is determined by the gen which essentially controls the CVT in addition to generating. Remember that the Gen can operate as a generator or motor in either direction to apply whatever torque is needed for system management.