You are right. I hadn't thought about that before about Glen using Jerry's lick like that. Well spotted.
For me, what I think is nice, is that Glen seemed so very happy and relaxed. He was in good voice and his playing was fantastic. considering he says he can not remember much of the eighties for various reasons, I think he still had much to be contented with, if not personally certainly professionally, he still provided great entertainment for all his fans.