Multiple Camera Control From Constellation

I am putting together a system and are using the 40X40 8k Smarthub for routing in and out of a Atem Constellation, the question I have is, are all SDI outputs fed the same control data (PTZ Color etc.) and the camera choses what to listen to by selecting the port number. If so could I mult just one output from the Constellation to all the cameras as I do not need any video information on the camera side, just control data.
Many Thanks.

I figured it out, it is as I suspected.