The fact is that they were two impacts - first the perimeter wall was knocked down and then the communications mast/tower was also uprooted from its base. How can the flight deck (as well as the cabin crew) be oblivious of two impacts) even if the instruments did not signal something wrong? And why was the CVR turned off?

I will not dispute Keyser's comment that AI cabin crew is generally better than their UA counterparts, but pilots are another story altogether - even on wide body aircraft. No doubt there are some good AI pilots but there have been plenty of reports of AI pilots slipping up in more ways than one.