What are you hoping to achieve? If you had a pair of ACE cards (or any network cards) you could put one in your iLive IDR rack and one in a GLD board. Either the iLive or GLD could be Mains or Monitors, and one set of preamps could feed both boards processing.
If you’re thinking of hooking up your T112 directly to an AR2412, it can’t be done. ACE and DSnake are different protocols, and the iLive needs the processing in the IDR rack to function. The iLives aren’t so much sound boards as IDR control surfaces-just one of many possibilities (tablet, computer, iPhone, PL-remote, 3rd party MIDI controller, etc.).
-Mark