Good question... I can't remember however it would be easy to test... Give it a try. The recordings are saved in the tiu so I suppose if the tiu is set to record it may record all data whether it comes from one remote/ tiu(super) or others. Only the remote set to record and saved would be on the playback.... I'm just guessing though and can't try it at the moment.
We do know running other engines during a playback is possible.