If I understand LionChief design, each controller will only run the locomotive it was designed for. Also if I am reading the literature properly, "... it works ALONG SIDE of Legacy/TMCC it does NOT work WITH Legacy/TMCC.", so that means you could get another controller for the 18079 and run it in conjunction with the LionChiefs. If that is what you mean by compatible then. "yes they are compatible".I am looking at an old Lionel 18079 Odyssey. Will this run/be compatable with my two LionChief engine system?