Context! "What difference at this point does it make? It is our job to figure out what happened and do everything we can to prevent it from ever happening again, Senator. Now, honestly, I will do my best to answer your questions about this, but the fact is that people were trying in real time to get to the best information."
We know Mr. Hicks gave her real time information and she still went with the YouTube video. She knows what happened and she knew about the security requests it for months before 9/11. There is your dasmn context!