WHAT?! You rattled off a bunch of names from Chinagate but no proof of any connections to 9/11. Tin foil hat BS alert.
Because the Gorelick wall was constructed to protect the foreign Chinagate information from the FBI, thus separating incriminating evidence from the criminals. 911 was just an unforeseen result of that policy because intelligence was too hamstrung to know about it.
That's one theory anyway.