I have a feeling that there are parts of NTF on the "Chain" box set recording that aren't on the video "version" and it is more obvious that there are parts on the video "version" that aren't on the "Chain" box "version" so I would guess the FULL recording must have been about at least 12 or so minutes in length, (probably much longer though!) I think the video version clocks in at something like 10:38 so it sure would be cool someday to hear the COMPLETE version if it IS kicking around somewhere but who knows if we'll ever hear that!
John