Oh god yes....
...the Derek & Clive video is a once only watch. Like a car crash in painful slow motion.
Like watching a marriage break up. If you see it though, you can imagine that Cook could be a bully. He goads Moore throughout the session in a less than friendly manner. Sadness? Frustration at Moore soon to be departing across the pond leaving him behind? We'll never know.
Also it blows a few myths too. Moore turns up to the session with nothing more than a bag of fruit. Whereas Cook has a pile of notes/material ready to go. So not surprising Moore can only react and ad-lib to what Cook says on that occasion. Not as spontaneous/off the cuff as many have alluded to.
Don't know if that was the case for all the D&C sessions, possibly not.
Cook was still a genius and I was mortified this day 20 years ago. I can't remember who said it (possibly Fry actually) to crush criticism that Cook had wasted the last 20 years of his life but they said (iirc) "He didn't waste the last years of his life, he had just done everything he set out to do, far earlier than planned!"