by a boat, or by the race committee or protest committee about an incident the committee observed in the racing area, shall be delivered to the race office within the time limit stated in the sailing instructions. If none is stated, the time limit is two hours after the last boat in the race finishes
. Other race committee or protest committee protests
shall be delivered to the race office no later than two hours after the committee receives the relevant information. The protest committee shall extend the time if there is good reason to do so.