Choreographed scenes work in faceposer but not in Hammer

[Cakebread]

I have a scene that works exactly how I want it to when I view it in faceposer, but when I compile the map in Hammer (HL2 engine), the models don't do any of the scenes. These scenes are composed of all gesture, by the way. I've matched the names of the NPCs to the names I used in faceposer, I've given the scenes a trigger to tell them to start, all that's missing is the NPCs actually performing the choreographed scene.

What's going on here??