According to this Fox News report, intelligence professionals are unable explain why the Benghazi intelligence downplayed the role of al Qaeda-linked terrorists in the attack.
Steve Hayes was the first to report discrepancies:
One thing that has troubled both intelligence officials and those on Capitol Hill as they have evaluated the administration's early response to the attacks is what appears to be an effort to write al Qaeda out of the story. For example, the talking points first reported by Lake, include this sentence: "There are indications that extremists participated in the violent demonstrations." But according to several officials familiar with the original assessment from which the talking points were derived, the U.S. intelligence community had reported the fact that these were extremists with ties to al Qaeda. That key part was omitted.
And the questions Hayes asked then remain relevant:
Why was that language dropped from the talking points distributed to Congress and Obama administration officials? Did anyone at the White House or on the National Security Council have any role in drafting them?