CommentStreams:61c579c4129674592a2bdc90951f17a5
What they are referring too is a seperate copy of the "Come Together" video that Apple Corps sent over to the BBC. This has leaked to bootleg as apart of the Beatles bootleg TMOQ DVD series (Volume 31: 1967 The Sgt. Pepper Commemorative Issue).
http://www.jpgr.co.uk/boot_hmc043.html
The DVD contains the full-length "Come Together" video that was sent to the BBC from Apple. Supposedly it's taken from a tape from Apple Corps for reviewers. The DVD doesn't feature anything else from the Late Night Line-Up special, just the stand alone "Come Together" video in colour. The clip itself is just as described in the above article - Apple reused the footage from the "A Day In The Life" video that was originally meant to be apart of an unfinished 1967 Sgt. Pepper TV special.
Later, the footage was reused again in the 1980's as a music video for "A Day In The Life".