Oops; the video list looked like it was in reverse chronological order, but is not. Even then, to find the first part of the stream, I have to hit the 'more videos' button and then go into 'Past Broadcasts' (the other videos are listed in the channel Video column, 2 at the top and 2 at the bottom, one being the 21 minute end, and the other 3 just around a minute each).
