The officiating team have clearly seen the behaviour though, John Brooks could hardly miss it given Klopp came right up in front of him. Even after a decision was made I don't see how VAR could get involved in this, as whether yellow or red is purely subjective and in the opinion of the referee.
I thought comms between VAR and the on-pitch officials was closed and only opened once VAR is informing them a check is in progress. If so I don't see how Tierney could ask for advice from VAR as the communications shouldn't be open at that point.
