An interesting point to consider; with INC REF ON (as you select in icing conditions), the speed that the Stick Pusher activates is increased by 20 knots, regardless of whether or not the increase is needed. In other words, if you forget to turn INC REF ON to OFF when you are out of icing conditions, the Stick Pusher will still activate at the higher speed, even though the extra 20 knots is not required.
Intuitively, it seems logical to me that the AOA for the shaker is changed and not the pusher. This would give stall warning some 20 kts early but not push 20 kts early. Can anyone verify this? If this is the case, it weakens quite a few speculative scenarios because the pilots would have had plenty of stall warning.
With that in mind I would still like to know the answer to what I asked in post 783 if any of you would be kind enough to find out.