Crikey. I leave you folk to your own devices for a while and you revert to string vest fact mangling.Collapse of core, as evidenced by the collapse of the mechanical penthouses before release of north wall roofline - 7 seconds, give or a take a bit.
A W Smith seems to be talking about "building 7 losing altitude before the claim of freefall", and you are talking about partial core failure start time.
East penthouse descent time could be said to be about 7s prior to release of the NW corner.
But to suggest 7s of "Building 7 losing altitude before the claim of freefall" is silly.
I suggest you folk grab the graphs I have provided you all when discussing these timing-based details.
