I doubt that it's the same guy, partly because of my understanding of the distance between the two locations and the time that the Nest camera was removed and the time that the guy with the two backpacks was videotaped. (Of course, my understanding or the timestamps could be wrong.)
That said, apparently NG's Nest camera is infrared and changes the apparent colors of objects. The guy with the two backpacks may have been photographed with a conventional camera, which shows the true (or almost true) colors of objects.
JMO