The are recordings of the presentations published (it does take few weeks to edit them them though). You can watch presentations from previous years in the archive on the website.
Went to one of these OSCF conferences last year and the mix of presentations and workshops was super smooth. For our company, doing a B2B white label hybrid event production made the setup way easier, especially handling both in-person and online attendees. Breakfast and lunch being included is a nice touch too—it keeps everyone from disappearing mid-session. Small things like that really make the day flow better.