A record-breaking semi-final - the antidote to modern football?

Former England captain Alan Shearer said on Amazon Prime: "I can't stop smiling at how open and bonkers this game is.

"It's one of the greatest games I've ever been to. Two teams that believe in their own ability to outscore their opponent."

The chaos continued after the break with PSG building a three-goal cushion, again through Kvaratskhelia and Dembele, leaving some to wonder if the outcome had been settled.

But Bayern were unwilling to let the chance of a first Champions League title since 2020 get away from them as they fought back in fearsome fashion.

Goals from Dayot Upamecano and Diaz were met with stunned silence from the home fans and no further response from the PSG players as the hosts finished with a slim advantage.

"I have been managing for more than 15 years, and I have to say it was the most exciting [match]," added Luis Enrique.

"It is important to show that that is the way to try to play football. OK, we are not happy as a coach when you concede four goals, but I'm happy because we won."

It was the first time in any major European semi-final that both sides had scored at least four goals, and just the second time in a Champions League knockout match after Chelsea and Liverpool drew 4-4 in the 2008-09 quarter-final.

With PSG netting 43 goals and Bayern 42, it was also the first time two teams have each scored more than 40 times in a Champions League campaign.

But was it a defensive disaster?

In a match littered with fascinating battles, it was ultimately a showdown between Europe's two most potent attacking line-ups.

For PSG, there was the composure and speed of Vitinha, the incisive passes and clinical finishing of Dembele and the moments of Kvaratskhelia magic.

Bayern had the electrifying ability of Olise, the explosive energy of Diaz and the ruthlessness of Kane. The trio have netted more than 100 goals between them across all competitions this season.

But at times, defences could be called into question.

Bayern's full-throttle approach in the second half left them exposed at the back and PSG duly punished them, while the Ligue 1 side appeared stunned as the visitors pulled back two goals, unable to believe they had not put the tie to bed.

Bayern boss Vincent Kompany admitted: "We suffered but we were dangerous. Five goals away from home in the Champions League normally means you're out but the chances we had, made us believe.

"I've seen a lot of good defending today but the game is such fine margins, you either go full into the battles, or retreat fully. The in-between doesn't work against that level of players."

Kane also praised his side's defence, despite it being the first time Bayern had conceded five goals in the competition since 1994-95.

But former England forward Wayne Rooney disagreed with the sentiment as he added: "I love Harry Kane but there is no way he can be praising his defenders. The defending from both teams was really bad, I think he is being modest there."

A boost for Arsenal or Atletico Madrid?

While this was the opposite to the style many fans have become weary of this season - defensive set-ups and an over-reliance on set-pieces - it is perhaps unlikely to be replicated in Wednesday's second semi-final between Arsenal and Atletico Madrid.

Two sides who pride themselves on their defensive resilience, and more likely to be found holding out for a late goal than playing heavy metal football, will have watched this match with caution.

Chances from open play have been tough to come by for the Gunners this season and a battle to see who can outscore who may not fall in their favour.

But they know they can rely on their defensive strengths and that may prove crucial to preventing a chaotic final.

"Ask the goalkeepers if they were happy with the scoreline," said former AC Milan and Real Madrid midfielder Clarence Seedorf. "We've seen teams like Arsenal getting so many clean sheets and making a difference.

"If there is a team that could bring it home, it could be them."

Watch highlights of every Champions League game from 22:00 on Wednesday on BBC iPlayer and the BBC Sport website and app.

There will also be a Champions League Match of the Day on BBC One on Wednesday, from 22:40 to 00:00.