At minute 29:36, one of the sisters picks up the Beaulieu ZM Super 8 camera and starts filming. This should actually be impossible, because the battery is missing, recognizable by the large round hole on the visible side of the camera.
The footage from the university talk has the time 3:22 on one angle and 3:23 on the other, so even though the professor is giving one cohesive speech, the time bounces from 3:23 to 3:22 to 3:23 and back to 3:22 as he's talking.
The shots are from two different cameras. Their clocks are clearly not synchronized.
The shots are from two different cameras. Their clocks are clearly not synchronized.