I think its suspicious that a retired reporter for NBC was snatching her notes off of the lecturn. Additionally, he went back, grabbed something from the lecturn, and handed It to Bill Clinton, who carried it offstage.
The Last Refuge has all the videos. At the end of the debate Bill Clinton gets “the Cleaner’s” attention. He walks over to him and Bill covers his mouth and whispers something to him. Bill, Hillary and the cleaner walk to the lecture. The cleaner removes something and hands it to Bill. Bill carries it off the stage.
Earlier in the video, The Cleaner attempts to remove something from the lecturn, but a photographer gets too close and he moves away.
This was well rehursed.