Injured Welsh flanker Sam Warburton, part of the BBC's punditry team in Cardiff, says he "can't defend" Wales' fourth try in the 34-7 Six Nations win over Scotland.
TV replays show Hadleigh Parkes' pass to try-scorer Steff Evans was forward.
Could the resulting bonus point prove crucial in the tournament?
WATCH MORE: Highlights: Wales 34-7 Scotland
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