So if the nose is more or less level and thrust has not been increased, why on earth should it think it has started to overspeed in the space of 2 or 3 seconds?
Seems to me some sort of ongoing comparison between flight computer responding to various sensors (AOA, Airspeed, etc ) and an Inertial reference system would immediately reveal such a difference.
And while one cannot fly for long using an inertial reference system due to lack of true airspeed data, the few seconds with a large delta between the systems could trigger a simple warning.
YO dude- Garbage in- Garbage out !!
A body in space cannot change in any direction without some sort of acceleration/deceleration vector as measured by precision accelerometer /gyroscopes. So why isn't such info used ?? In days of yore- it was a simple gyroscope to determine attitude , etc and a pendulum device/equivalent to determine certain vector accelerations.. . .