Stick Shaker Question Answered
"But the autopilot's deceleration "reduced [the 737-800] to minimum flying speed," setting off an alarm. The crew "immediately" attempted to apply full power, he said. "However, this was too late to recover the flight, the aircraft was too low and, consequently, the [aircraft] crashed 1 km. short of the runway."
That answer my question about how quickly the crew reacted to the stick shaker - if that was the alarm they reacted to "immediately".
I cannot think what other warning it would have been?