Graham Arnold and Tony Gustavsson’s legacies will be shaped by what Australian football does next

When was the moment, do you think, that Graham Arnold realised his time as head coach of the Socceroos was up?

Was it while he stood on the sidelines of Robina Stadium two weeks ago, watching a shot from a Bahraini forward ricochet off the shin of Harry Souttar and spin into the back of…