I also wanted to re-watch one of the sessions, but unfortunately the "Myeventurl.com" links don't work at the moment which had the Teams link in it for the actual Teams meeting session.
I looked up in my browser history and was able to retrieve the two Teams meeting links that I used that day and they still work. Thought I would share the links here as other people were having the same issue.
If this is not wanted, please edit/remove my message if needed.
Endpoint Manager Acceleration Day: Mobility - Option 2
https://teams.microsoft.com/_#/l/meetup-join/19:meeting_Y2I2ODExNmYtMGNmNS00ODI4LTgzOWItNDA1YjhiZmRkNzk4@thread.v2/0?context=%7B%22Tid%22:%2272f988bf-86f1-41af-91ab-2d7cd011db47%22,%22Oid%22:%222558bf47-79e0-4f85-a92c-d44f7af2c457%22,%22IsBroadcastMeeting%22:true%7D&btype=a&role=a&anon=true&deeplinkId=a548bb6c-d80d-48e3-9b31-8b424f06a0be
Endpoint Manager Acceleration Day: Windows - Option 2
https://teams.microsoft.com/_#/l/meetup-join/19:meeting_YzQwODNmZjMtYmY5Yy00Mjc3LWE1N2MtMDEzMDdjMTFhOTMw@thread.v2/0?context=%7B%22Tid%22:%2272f988bf-86f1-41af-91ab-2d7cd011db47%22,%22Oid%22:%222558bf47-79e0-4f85-a92c-d44f7af2c457%22,%22IsBroadcastMeeting%22:true%7D&btype=a&role=a&anon=true&deeplinkId=ea172713-eef4-4fa7-a1fa-35f95ed1b2ec