As rain drenched north London and one corner of this ground was ignited in green smoke and white firecrackers, the television cameras panned to a young Arsenal supporter. He stood motionless: hood up, mobile phone in hand, mouth wide open.
It was a portrait of shock and awe and grudging admiration that encapsulated the mood around this place in the moments after Pedro Goncalves collected possession on halfway, looked up, and floated a shot towards the Arsenal goal. We were just beyond the hour mark and, briefly, time stood still while the ball drifted 45 yards and Aaron Ramsdale scrambled towards his own goal.