Assistant referees have a lot of roles to play. Especially when there is a counterattack and the referee is far from play, the AR plays a critical role. Sometimes there may be a SPA offence committed during the counterattack and the referee is not in a good position to see it. Maybe the AR can help. But it does not mean the AR needs to flag for the foul and a caution right away because there may be advantage.
In the clip below, we highlight how ARs need to recognize when they are closer to the play and/or have a better view of an incident than the referee, when to be ready to act like a referee by raising their flag, but also when to be patient in case there is advantage. Furtheremore, if we apply advantage, the AR needs to quickly shift their focus to the next phase of play.