well even i have heard that u cannot stall and airbus A320, every airspeed has a related AOA associated to it, +16 to -4 for most GA aircrafts, and no matter what the airplanes attitude or airspeed is if the the AOA is not in the range u can stall the airplane, coming to the a320 not stalling is , when the airplane is stalled u get the engines on full thrust in the TOGA and alpha 4 config and the plane can actually climb at 5000ft/min.,.it can also be rolled at 60 degrees bank which is outside the flight envelope.,.and the FD helps to get the plane in straight and level from any unusual attitude.,.
it is strange that all the pitot probes are blocked at a time.,can though be done in the sim.,.