We need a timeline. She said in October that there were prisoners in the ministry in Benghazi. But, she had the affair months ago. The FBI didn’t start investigating Petraeus because of what Broadwell said in Denver this October. The FBI and Holder were investigating Petraeus for months.
Yes, but that only proves that the WH (via DOJ) knew about the affair when LTC Broadswell gave her talk.
The WH had the motive and the means to pressure Petraeus.