Niemand
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2. There should be a rule about the procedure for ending a game. If one player leaves the game without permission from their opponent (unless there is a prior agreement about saving), they leave the battlefield: they either flee or die, it doesn't matter - they lose. IMHO.
Why? In tournaments, this might make sense. Probably. But in a season game... There are no strict deadlines here. The rules are more than flexible. Why complicate things?