connected clip

A clip attached to another clip in the timeline to create an effect. Video clips are connected above clips in the timeline, and audio clips are connected below clips in the timeline. Connected clips are used to create cutaway shots, split-screen effects, picture-in-picture effects, green-screen or blue-screen effects, and sound effects. Connected clips remain attached and synchronized until you move or remove them.

Timeline showing clip being dragged above another clip to connect it