This was the kind of night Anfield had waited two long years to witness. Well, sort of.
Some 727 days since Atletico Madrid pilfered their passage into the last eight of the Champions League as the COVID-19 crisis prepared to grip the world, Liverpool were once more playing host in front of 54,000 on a big night of continental knockout football.
And while the Reds ultimately saw their seven-game winning streak in Europe come to an end courtesy of a 1-0 triumph for Inter, enough was done to make sure it is their name that will be included in the convoluted, overblown draw in Nyon later this month.
This famous old venue will surely see more stirring evenings than this, but for now, it is very much job done.
Liverpool failed to sparkle here against the well-drilled and stubborn Serie A champions, but a 2-0 cushion earned in Italy last month was just about sufficient, even without the aid of the away-goals rule.
It's difficult now at this stage of the campaign to dissect any one particular result without speaking of the wider consequence of how it impacts the chase to become the first team to win all four trophies in a single campaign.
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Into the quarter-finals of another competition, the prospect of a quadruple is still distinct as we move further into the second week of March.
But in truth, that talk is still premature for Klopp himself as his Liverpool side look up to Manchester City from second in the Premier League, with a six-point buffer between the two great rivals, despite a game in hand for the chasers.
And with a further 19 matches to be played if Klopp's men are to indeed go all the way to every final - to take the total of games for the campaign to a remarkable 62 - it will be far too soon for the manager and his staff to let their minds wander even fleetingly.
In fact, as those inside the club attempt to keep a lid on those spiralling expectations, perhaps this defeat can serve a purpose on that score?
Liverpool have been navigating uncharted territory on the quadruple front for a number of weeks having never been in a position to win all four trophies this late into a campaign.
And with one piece of silverware already shined up in the Anfield cabinet, belief has only been emboldened.
But if the end of a 15-game unbeaten streak sobers and refocuses anyone who may need it inside the camp, then this loss will have stood for something.
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They will now contest a fourth Champions League quarter-final under Klopp, but they may need to up their levels a notch or two as we get down to business.
A slight stumble here, no doubt, but it keeps the Reds on course for that rerouted road to Paris for May's final and no-one will want to be paired with the six-time winners when the draw is made on March 18.
The recalled Joel Matip came closest to scoring in the opening half hour when he steered Trent Alexander-Arnold's free-kick against the bar.
Mohamed Salah had a glorious chance after the break to all but end the tie, but he could only find the base of the post after Samir Handanovic had punched it into his path to deny Diogo Jota.
Lautaro Martinez fired the Nerazzurri back into the game with a superb effort just after the hour mark with Alisson Becker given no chance by the Argentina striker.
But if Simone Inzaghi thought that would be the moment the tie turned for his side, he would be mistaken as Alexis Sanchez was given a second yellow for a challenge on Fabinho.
It was perhaps harsh on the former Manchester United and Arsenal man as the erratic Antonio Mateu Lahoz made himself known, but Sanchez could easily have been given a red in the first half for the tackle that seen him cautioned.
Sensing the Serie A side were back in the tie - despite the numerical advantage for the hosts - Klopp sent on Jordan Henderson and Naby Keita for Curtis Jones and Thiago Alcantara.
After striking one post, Salah then hit the other when he connected with Sadio Mane's floated pass with a right-footed half-volley. It was an effort that deserved more.
Luis Diaz was sent on inside the final 10 minutes for Jota, who still seems to be struggling somewhat from that ankle injury in the first leg. The Portugal international was largely subdued all evening.
This was the first game in 60 that Liverpool had lost a second leg at Anfield having won the first match but just a third defeat in 53 games across all competitions sees only cosmetic damage done.
With the manner of their exits to both Atletico and Real Madrid in the last two seasons still fresh in the minds of some, there might just be a lingering feeling of unfinished business in this squad as far as the European Cup is concerned.
And perhaps that burns brightest inside Klopp, who has previously admitted last season's crushing injury list made it impossible to do the club's name justice, either at home or on the continent.
Just don't mention that Q word to him anytime soon.
