Duran's incredible double edges Celtic closer to Champions League
Camilo Duran's second goal of a breathless night in Glasgow told you much about the direction of travel in this Champions League play-off – at 3-0, Celtic, barring the collapse to end all collapses, are heading back to the big league.
It also told you plenty about what they hope to do when they get there, the type of stuff they want to play, the ambition, the class, the ruthlessness.
Taking your pick of Celtic's three terrific goals is not an easy feat, but that third one is worth some examination.
From slow start to emphatic finish it lasted just short of 30 seconds, from Viljami Sinisalo in the Celtic goal, out to Colby Donovan at right-back, back to Sinisalo and out to Auston Trusty on the left side of defence.
Trusty played a positive ball into midfield and then it started to happen.
Benjamin Nygren moved it on swiftly to Duran, who sent it back Nygren, now running free into the LASK penalty box. The visitors had been carved open. Nygren played it back to Duran, who whipped it into the top corner.
LASK are no dummies. Austrian champions. Cup winners. Martin O'Neill sang their praises in the aftermath and preached caution ahead of the second leg, as he was obliged to do. And you could see why.
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LASK created a bucket of chances in Glasgow on Wednesday. If O'Neill's team had been off it on the night, they'd be in trouble in the tie right now.
They did not beat a punchbag. They have a healthy lead, but a knockout blow needs to be landed in a week, as you have to imagine it will be.
This was a heavyweight Celtic performance in attack. There is much work to do in defence, for sure, but they can do that work from a position of strength – with the whiff of an extra £40m in their nostrils.
Celtic won only 10 of their previous 50 games in European competition, so this one was to be savoured.
Duran lit up the night. Nygren scored his fourth goal in four games. Callum McGregor was exceptional in keeping Celtic on the front foot. And Colby Donovan – the teenager in Alistair Johnston's terrain – was hungry and effective.