Appeals Committee. Disputed situations in tournaments.

P.P.S. Regarding the technical implementation - I think that after synchronization, the blue player should be shown the red player's move and offered to stop the OH with a replay of the last day.

Regarding the technical implementation in the current version, it is simpler to always play OH only until the re-meeting. Otherwise, saving an hour or an hour and a half of time turns into a real pain upon contact, which cannot be resolved correctly in any way. In Heroes V, by the way, there is no question of canceling the results of an OH break. There are techniques where one of the opponents intentionally breaks simultaneous play in such a way as to gain an advantage from this event (for example, using Dimension Door into the area where the opponent is moving and blocking the portal/attacking heroes), and this is part of the game.