Particularly apt as my airline experienced an unnecessary low speed rejected take off when one thrust lever was placed just above the upper limit of the zone and one just below, leading to a relatively large disparity in thrust. Well worth knowing about the IAE no-go zone.
That is suprising. ~10% N1 split on the throttles should have been quite noticable. But these things happen I suppose.
Still one low speed RTO due to the auto keep-out-zone logic is better then over stressing the blades and having to replace engines more frequently...