Citing U.S. and U.K. intelligence sources, Harding wrote, GCHQ played an early, prominent role in kickstarting the FBIs Trump-Russia investigation, which began in late July 2016. According to one account, reported Harding, GCHQs then-head, Robert Hannigan, passed material in summer 2016 to the CIA chief, John Brennan. The matter was deemed so sensitive it was handled at director level. After an initially slow start, Brennan used GCHQ information and intelligence from other partners to launch a major inter-agency investigation.
Brennan has himself previously taken credit for initiating the inquiry. While on Meet the Press, Brennan suggested that the British sent their intelligence on to the FBI, in his May testimony before the House Permanent Select Committee on Intelligence, he indicated it came from him directly.
In late August, Brennan briefed congressional leaders on the same topic. The briefings, according to a New York Times report, reveal a critical split last summer between the C.I.A. and counterparts at the F.B.I., where a number of senior officials continued to believe through last fall that Russias cyber-attacks were aimed primarily at disrupting Americas political system, and not at getting Mr. Trump elected.
Oh my Gosh! This just keeps getting better and better.
:: a critical split last summer between the C.I.A. and counterparts at the F.B.I ::
And still no in-depth info on Strzok working simultaneously for C_A and FIB.
http://thefederalist.com/2018/08/02/inspect-fisa-applications-closely-mysteries-arise-joseph-mifsud/
If You Inspect The FISA Applications Closely, More Mysteries Arise About Joseph Mifsud