Brian, what do you make of this language: "If competition has to be extended to Monday, it must be completed without starting a game after 11 p.m. Monday (if the regional final begins before 11 p.m. and an “if necessary” game becomes necessary to determine the regional champion, that game will immediately follow). Note: Each round gets one extra day to finish the round."
Seems like it can be interpreted to mean that if necessary game could start after 11.