Added to the timeline Manafort's meeting with Kilimnik: collaboration with a political consultant known to work for Russian intelligence.
(That Americans elected Trump again after what was revealed in the five-volume report by the bipartisan Senate Intelligence Committee is mind-boggling. Also mind-boggling is that Marco Rubio was acting chair of the committee at time of release, and went on to work for Russia in multiple roles in the Trump administration.)
https://www.trumpisarussianasset.info/timeline/more/manafort-kilimnik