In the Wales England game yesterday, the ref called “time on.” Biggar delivers a kick on a sixpence and Adams scores. Farrell was up in arms. The whole word becomes rugby keyboard warriors. Could the ref have changed his mind if he'd asked for video footage to assess the situation? Could either of the assistant referees and/or the TMO intervened at all? What are the rules (if any) on refs changing their minds? And could the ref have used video footage in this case to come to the correct decision? I would appreciate an erudite answer, please, with the relevant laws explained. In addition, has anything similar happened before and what was the outcome?