carried the flag for Great Britain at the Olympic Games
... that only two competitors have carried the flag for Great Britain at the Olympic Games on more than one occasion?
... that only two competitors have <b id="mwC34"><a href="./List_of_flag_bearers_for_Great_Britain_at_the_Olympics" id="mwC38" rel="mw:WikiLink" title="List of flag bearers for Great Britain at the Olympics">carried the flag for Great Britain at the Olympic Games</a></b> on more than one occasion?