@one You've prompted some scenarios
Player leaving the field of play takes longer than 10 seconds and commits dissents.
Does the substitute now have to wait a full 10 or even 11 minutes before coming on?
Remember the substitution must take place after the 10 seconds, so is he effectively a substituted player after the 10 seconds have elapsed
Player coming on commits dissent after the 10 seconds has elapsed.
Does he have to wait for 10 or 11 minutes to come on?
Ie When does he become a player rather than a substitute. Is it when he crosses the touchline, when the player coming off crosses the touchline or after that 10 seconds have elapsed?