Earlier stall recovery procedure was based on approach to stall but after a few accidents in the US where the thrust increase prevented the pilot from lowering the nose FAA asked for a review of the procedure. There is a video by Airbus on the new thinking on stall recovery. Experts agree that even for a test pilot it is difficult to make out the approach to stall and full stall. So there is a standard recovery procedure now that recommends reducing the angle of attack first and once the stall warning has stopped increase thrust as required not necessarily TOGA.