When speaking in direct chat while remote-controlling a unit in Zeus, the voice of the Game Master comes out of the curator unit instead of the possessed unit. A scripted solution can be implemented to teleport the curator unit to the position of the possessed unit and attach it, then detach it and teleport it back to his original position when not in use. This issue has still not fixed despite being mentioned as fixed in http://dev.arma3.com/post/sitrep-00117.