On the website of the Berkeley mathematics department there is mention ([see this][1]) of a colloquium  held on november 5, 2020 (by Zoom) whose speaker was Shinichi Mochizuki, with a talk titled "Classical Roots of Inter-universal Teichmüller Theory". The corresponding slides seem to be online ([see this][2]). Here are my factual questions:

1) did this event really occur ?
2) if yes to 1, how was the speaker introduced ?
3) if yes to 1, do the slides reflect all that was said, or were there other comments, and if so what ?



  [1]: https://events.berkeley.edu/index.php/calendar/sn/math.html?event_ID=133775
  [2]: http://www.kurims.kyoto-u.ac.jp/~motizuki/2020-11%20Classical%20roots%20of%20IUT.pdf