No, not on the Saab. The prop shaft is driven off a turbine stage that sits in the free stream behind the other turbine stages. The right engine can have a brake applied to that shaft so that the engine can be run without the prop spinning so that it can be used as a form of auxiliary power unit to provide air conditioning and electrics on the ground if no GPU is available. It’s a cheaper and lighter alternative to carrying a separate APU and is fairly common in most free turbine turboprop regional aircraft.