Incredibly, in a game of nine goals, the tie was still poised on a knife-edge, and even though the Bavarians were a goal behind on aggregate, they had home advantage.
Bayern unbeaten in nine home games
Both managers had only made one change to their starting XIs, and something had to give for teams that had an identical recent record of four wins, one draw and one loss in their last six games in all competitions.
Further, Bayern had scored 20 goals and conceded just six in their UCL home games in 2025/26, all of which they'd won, and the Bundesliga outfit was also unbeaten in nine games at home in all competitions heading into the match.
PSG had won five, drawn one and lost one of their away games in the Champions League, but were on a six-match away winning run in all competitions.
As promised, both teams went at it from the first whistle, and Ousmame Dembele slammed home the opener after only three minutes, from a pinpoint assist from Khvicha Kvaratskhelia, his sixth of the competition.
The visitors' game plan was clear, as they didn't allow any Bayern player to settle for a moment, but to the hosts' credit, they were calm under pressure and indeed, had six of their players still with 100% pass completion as the game started to evolve.
With 10 minutes played, however, the Bavarians still hadn't even had a touch in the PSG box, but their movement, both on and off the ball, like that of their opponents, was incredible.
Olise's influence growing
Nuno Mendes' early yellow card meant that Michael Olise could afford to run at the left-back at pace, and the Frenchman's influence in the game began to grow accordingly.
Five one-on-one duels were attempted, and three were won, which were both the best from any player on the pitch in the opening 15 minutes.
Not until that point in the game did Bayern have a genuine chance to equalise on the night, with Mendes' block on Olise, the tackle of the game to that point.
Kvaratskhelia and Desire Doue were consistently attacking down the hosts' right-hand side, believing that Konrad Laimer was Bayern's weak link. Not winning any of his three one-on-ones was evidence of just how difficult a night the Germans' No.2 was already having.
Kane not in the game at all
Getting Harry Kane on the ball was proving problematic, too, and only two accurate passes from the England captain (25% accuracy) were by some distance the worst output from a player on either side.
Perhaps more alarming from Kompany's point of view is that his entire starting XI had only attempted one tackle in the opening 25 minutes, and the sight of PSG pouring forward en masse at every opportunity is unlikely to have pleased him either.
After Mendes was lucky not to receive a second yellow card for handball, Bayern were then denied what appeared to be a clear penalty for a handball in the box. In both instances, the official perhaps had just about enough leeway within the laws of the game to be confident in his decision-making.
A world-class save from Manuel Neuer, from Joao Neves' flying header, undoubtedly kept his side in the tie, but the visitors were not only relentless in their attacking, but also disciplined in their defensive work.
Bayern's frustration
As the game approached half-time, a collective 12 clearances continued to frustrate Bayern, whose 28 final third entries to that point were even more than PSG had managed, not to mention a collective 69% possession in the final 15 minutes of the half.
Luis Diaz had been the busiest of their attackers alongside Olise, though a number of his five touches in the box were either overhit or the player had tried too hard to impress and ended up losing the ball.
Jamal Musiala had Bayern's first shot on target as late as the 44th minute, but it took a super save from Matvey Safonov to keep the effort out.
Perhaps the only question that needed to be answered at the break was how the game had remained 1-0.
PSG excellent in defence
If there were going to be another goal after half-time, it would either end the game as a contest if PSG scored it, or give Bayern renewed hope that a place in the final wasn't out of reach.
Certainly, there was more tempo and purpose to the Bavarians' forward play and momentum, but they simply couldn't find a way through a tightly-packed PSG defence.
A defence that had won the vast majority of their tackles and made nine clearances between them.
When Bayern did bypass the visitors' back four, they rarely scaled the heights that they're capable of reaching, and Aleksandar Pavlovic's wayward effort when well-placed - the hosts' seventh attempt since Mendes had last taken aim for PSG - was symptomatic of their wastefulness.
Tie starts to slip away from the Bavarians
The game really began to open up as it hit the hour mark, as Bayern's desperation to get back into the tie became clear.
Ahead on shots taken (12 vs 8), touches in the opposition box (24 vs 10), possession (60.9% vs 39.1%), and accurate passes (308 vs 171), they were, nevertheless, still two goals behind on aggregate.
Neuer again came to the hosts' rescue, going full-length to turn Doue's early shot around the post, and bringing up his fifth save of the game in the process.
Any loose or second balls were being won by the visitors, and the sense that the tie was slipping away saw the atmosphere within the Allianz Arena cool as a result.
Both Diaz and Olise could only find Safonov's gloves when well placed, as Bayern continued to try and force the issue, but the fact remained that with less than 20 minutes to play, they still hadn't got the better of a team that had won only seven of their 22 tackles attempted.
Second best when it mattered
A clear man-of-the-match, Kvaratskhelia almost put the game to bed but was denied at the last possible moment, whilst Doue was once again unlucky with an inventive attempt.
That it was they and not Bayern who were on the attack in the closing stages spoke volumes.
Kompany will also rue the fact that with the likes of Olise, Pavlovic and Laimer winning only 12 of the 44 contested duels between them, Bayern were simply second best on the night when it mattered most.
Harry Kane's injury-time consolation - his 14th goal in this season's competition - was too little too late, meaning PSG now have the chance to repeat their success of a year ago, and they'll face an Arsenal side looking to win the Champions League for the first time in their history.
Check out all the match stats here.
