ARKit + Kinect?

I have an iPhone and a Kinect sending motion data into Unreal. This works but I need to create a Live Link virtual subject in order to combine them. But when I try to do that the virtual subject only shows subjects from the Kinect for inclusion. (See screenshot below)

Can an ARKit subject be combined with other subjects in Live Link? I noticed that the role of the ARKIt device is set to “basic” but I can’t find anywhere to change this

https://preview.redd.it/pxw46opgd8061.png?width=1019