gear fail = the shaft between the input and output end of that gear breaks, however so.
so it is a shaft failure or the bolts that hold the gear to the shaft and not the gear breaking up - that makes more sense.
However, Nick's post indicates that the problem won't happen again since the shaft and gear were redesigned - therefore not much point in teaching it in the sim.
On the N1 governing by the DECU - with AC talking about matching N1 or Tq - I think that is confusing the ability to beep the engines up and down to match them in the way you prefer with what the DECU is designed to do (govern N1 and load share with the other engine)