Do you think the earlier visit by the other ambassador was the key to turning the lock to verify the prey was in place? I think it is likely, and I agree with your point.
The Turk ambassador left and safely made it through the roadblocks set up around the entire area by the attackers. This alone speaks volumes. They let him leave.
Where are the Benghazi survivors and where are the calls for their testimony?
They are only alive today because of the heroic actions of the CIA assets who gave their lives fighting back and calling for backup while Hussein and Hillary watched.
I think the truth is they were all supposed to die that night, so the truth about this entire operation would die with them. Dead men tell no tails.
I fear for their safety and hope they have not met with a tragic accident by now.