Because her statement to the FBI on 11/26/63 is 'previous' to her WC testimony
yes, 11/26/63 is certainly "previous" to 3/18/64. That's your basis?
and it is information given (or 'furnished') to the FBI, hence the phrase "information previously furnished to the F.B.I."
Just to expand on that - the statement given to the FBI on 11/26/63 contained information relating to her "activities and impressions" on 11/22/63 as she states in her CE 1381
So I guess somebody needs a lesson in "necessary" vs. "sufficient".
Either way, CE 1381 does not make any reference to Reid encountering Oswald or a Coke.