The through day train Munich - Venice, and all other day trains between Munich and Italy (Verona, Bologna, Milan) - are operated by DB/OeBB. These are sold on the DB website for journeys to/from Germany, on the OeBB website for journeys to/from Austria, and on both websites for internal journeys within Italy. Le Nord is only part of the "consortium" in that its staff are required to run the trains (in Italian territory).