When Celtic last met a German side in the Champions League on the back of a 6-0 domestic win, they were dismantled in Dortmund earlier in this campaign.

Though that was only just over a month ago, the Scottish champions appear to have taken their medicine and were much more streetwise in familiar surroundings.

Sprinting out the blocks, they did not allow their visitors to breathe at the back and swarmed in their numbers at every opportunity.

Key to that was Kuhn. The RB Leipzig academy product taught the German side a lesson with a sensational display. Playing with freedom and flair, the 24-year-old was, once again, tremendous on the right.

In truth, Celtic as a team taught Leipzig – a side sitting second in the Bundesliga – a lesson. They repeatedly asked questions and their visitors had no answers.

When Kuhn did depart to a rapturous round of applause, Hatate took over as the talisman of this tremendous side.

It’s been a long, long wait for three home wins in a row for Celtic in this competition. A 17-year wait. Through that spell, the tales of the fortress this cauldron used to be seemed a distant memory.

This brought them back to light. The Feyenoord win last season was a dead rubber; the Slovan Bratislava victory earlier this term was expected; but this was a statement. And a convincing one at that.