Is there any report yet that will show whether someone attended via desktop app, web, or mobile app?

I know web attendees are marked as such during the live event, but in order to troubleshoot a recent issue, I need to be able to see which method each attendee used. I strongly suspect that the reported issue (Seeing only "Waiting to view < Presenter>'s screen" and not the currently live webcams) was only among the web viewers, but I can find no way after the fact to confirm that. Surely that information exists.  Do I have access to it?