Sessions was quite careful as he entered the minefield of the Senate intelligence commission. Dem Senator Warner played the part of Cotton Mather in the witch hunt.
Sessions used "I can't recall" for two reasons. He, like most of us, don't possess an eidetic memory. Do you remember everyone you shook hands with at a large reception, months afterwards? Plus, he knew that the Dems would jump at the chance of a perjury charge, if me did not speak exactly as to a something. "I don't recall" and "To the best of my recollection," are two old lawyers ploys to keep their client from a perjury charge.
Meanwhile, as this witch hunt/Indonesian shadow puppet show continues, we learn that the Russians were attacking the US electoral system for months before the election in about 37 states. That Obama knew of the attacks, contacted the Russians on a back channel line to complain, but did little otherwise.
I'm going to post on this in the News section of the forum.