My understanding of laws of rugby is limited to explanations and descriptions given by TV commentators on several years of enjoyment watching live games. There are many comments about new laws and the attempts to achieve consistency of interpretation by referees. On Sunday Scotland scrum half Ben White was penalised for exceeding the 5 second time limit. However it seemed to me that South Africa's captain Eben Etzebeth had already crossed the offside line before Ben White had picked up the ball and before the referee had blown the whistle to penalise White. Why was Etzebeth not penalised before White? Does the offside law no longer apply 5 seconds after the "use it" call? If the latter is the case, this is surely adding an extra pressure on scrum half's in already highly pressurised circumstances. In terms of consistency of approach to interpretation of laws, there was a circumstance in a recent Gallagher Premiership match when Bath scrum half Ben Spencer clearly in the referees opinion overstepped the 5 second rule for the first time but was not penalised, but merely given a verbal warning. Where is the consistency of interpretation and application of the rules?