Not trying to excuse the present mess in any way, and you are both very correct in what you say (I
was very well placed to understand the whole matter at hand - in a previous life/stock transition sense), but was just confirming some of what Snow1964 had mentioned and tried to explain some of the issues that did, in my time, and will (701) quite likely have some impact on the present situation, that is all.
On a personal note I have genuine faith in some of those behind the scenes (those at the coal faces of their respective aspects of the job) to have prepared various scenario's in preparation for the 701 introduction, which is why I am still bemused about the ongoing delays. I do get the feeling there is something else going on here (701's), above and beyond any paper introduction plan/cascade etc., but what that might be, I am in no better position than yourselves to understand...