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American gymnast Chiles must return bronze medal, IOC says.
(www.voanews.com)
Everything related to the Summer and Winter Olympics and Paralympics.
4 seconds should be within the "margin or error" anyway, unless there is literally a visible appeals timer running, and an appeals button which stops it.
It can very easily be 4 seconds from the time someone calls for your attention, explains themselves in brief, and the time is recorded. That's assuming everyone agrees on exactly when the countdown starts in the first place.