This time it’s quite easy, no download script or else is needed.
As IBM leverages IBM Connections for storing the attendee and session details in the background one can easily access all files at ones.
The data is stored in the IBM Connect 2016 community which can be accessed by attendees here (you’ll need to use your ibmeventconnect.com credentials for that). The files are stored in the Files section.
From there you can download the files you need. Or use this link to download them all at once directly.