I didn't watch the games and don't really watch footbal so I am perfectly qualified to pass opinion on this matter on STW.
Professional sportsman accidently breaks the rules but isn't spotted so carries on playing. After the game someone says – That was a hand ball. He says Yes but the ref didn't say anything.
I seem to remember from playing rugby in my youth that we were taught to 'Play to the whistle' meaning if the ref doesn't blow his whistle you keep on playing.
I scored a great try like this once. Our bloke was running up the picth, they bloke threw him on the ground by his throat and everyone stopped, shocked at such a deliberate foul. I ran over and picked upo the ball and walked through their players who also had stopped and scored a try.