27/09 what you say is correct. However at high airspeeds from level flight when you increase the back pressure the aircraft doesn't immediately stall does it? It climbs until you run out of airspeed, or completes a loop. Continue increasing back pressure and the aircraft will continue to increase its angle of attack to the relative airflow until it stalls. Where? Around 16 degreesd angle of attack.
A dynamic stall can occour from any airspeed or attitude, how? Increase the angle of attack beyond the stalling AoA. Again around 16 degrees to relative airflow, depending on the aircraft.
Point being, there is only one critical angle of attack for each aircraft configuration, and it does not vary with airspeed. What controls AoA? Stick position.