Although Bayern were facing off against a team which in theory would have been one of their closest competitors for the league title, the word "closest" is relative in this case because, as many might have expected, Leverkusen weren't even close. Bayern dominated this match right from the jump with all three goals coming in the first half; the first two were scored by Serge Gnabry and Nicolas Jackson respectively. Just to rub it in even more for Leverkusen, Bayern's third goal was an own goal by way of French centre-back Loïc Badé.
Although Leverkusen entered this match in the midst of a relative hot streak, this match served as evidence of the chasm between Bayern and the rest of the league. As mentioned earlier, this was Bayern's 15th win in a row; they haven't even drawn, let alone lost, even one match so far this season.
One aspect of Bayern's victory over Leverkusen which undoubtedly raised much attention was the fact that they did it without many of their most important players. Not selected as part of the starting 11 at the Allianz Arena were players such as Dayot Upamecano, Luis Díaz, Michael Olise, and most notably of all: Harry Kane - the Bundesliga's leading goalscorer and arguably the best player in the world right now. Vincent Kompany went with a slightly understrength line-up to face a team which will be in contention for Champions League qualification - and that team absolutely took Leverkusen to the woodshed.
Of course, Bayern's next match will be a significantly more difficult one - they'll be on the road at Paris Saint-Germain in the Champions League. While it's certainly possible that Bayern's win streak ends at the hands of the Champions League's reigning champions, even that isn't all that likely given the molten-hot form that Bayern are in. There's no question that Bayern are the best team in the world at the moment.
The club record for consecutive wins is 23; this was achieved back in the 2019-20 season. Remarkably, it isn't even out of the question that this current Bayern squad could match or even surpass that number. If Bayern pick up wins in their next two Champions League matches against PSG and Arsenal, there's every chance that they could get to 24 as no other team up until that point seems to pose a serious threat to the streak except maybe VfB Stuttgart in the league - and even that's highly questionable due to not only Bayern's superiority over the rest of the Bundesliga, but also the fact that Bayern have such a psychological hold over those teams that even at their absolute best, the teams closest to Bayern often don't actually believe that they can beat Bayern.
Apart from Díaz, Bayern didn't really make any major acquisitions in the off-season - but as it's turned out, they didn't need to. Many of the players from the 2024-25 squad have improved significantly - and this from a team that won the league by 13 points. The tactical tweaks which Kompany has implemented, most notably a shift to a pseudo 3-2-5 or 2-2-6 formation when attacking, have further elevated the level of this Bayern team.
While it's of course possible that at some point down the line the wheels might start to come off, that doesn't look like it'll happen any time soon given the way Bayern are playing. There's every chance that Bayern will finish the season with a Treble and thus their seventh Champions League title in club history which would tie them with AC Milan for second all-time.
Stopping Bayern Munich will be a tall order indeed - they are absolutely locked in right now to the point that their current win streak feels more like a waypoint than it does to being anywhere near what it'll end up as.