It's difficult for Leverkusen because in the end there are only 2 options for the Bundesliga when it comes to trophies, one is Bayern and the other is hoping Bayern play very badly and other clubs can compete for the championship but for this season I doubt Bayern will play badly (like last season).
On the other hand, sometimes this busy schedule can be a problem for Leverkusen even though Xabi has shown his capacity as one of the good coaches but the test this season will be very different where Xabi must be able to be consistent but not force the players in every match considering that the players also cannot be compressed so as not to fatigue and must have a good rotation about this. Xabi's task will be very tough but if he wants to achieve success again then he has to pass this test.
Likewise with Bayern Munich, if their defense line plays in poor performance. or being ups and downs, then Sven Ulreich will have difficulty defending his goal so he doesn't concede. So far, according to my observations, Bayern Munich's defense, especially in the Bundesliga, has played quite well and solidly. However, if their performance is unstable, or when playing against a team that is quite tough, Ulreich will easily concede. proven, when Bayern played Leverkusen, Leipzig, Manchester United in the Champions League group phase. In these matches, Sven Ulreich underperformed. If you want to be even more sure, you can check the statistics. and I think the problem facing Bayern is the goalkeeper. Plus, Bayern needs some pretty tough defenders. Well, it's not impossible that Bayern will slip up in some of their matches, and that doesn't rule out the possibility at all. Luckily the midfield and attack line seemed to be playing quite solidly with high performance. well, if Neuer doesn't recover by the first half of the season. Like it or not, Tuchel must cover the weaknesses in his squad in the January winter transfer window.
As for Leverkusen, it is not an easy matter to win the Bundesliga trophy even though they have performed impressively so far. Along the way, Leverkusen will also meet several tough teams both in the Bundesliga and in the Europa League. The point is, how Xabi maintains the performance of his team's squad as well as the fitness of the players. If he is able to do this, it is possible that Leverkusen will provide tough competition until the final moments of this competition. We'll see, because the Bundesliga will still feature match after match until the season ends. After all, Leverkusen has one game to host Bayern at the BayArena and they could benefit from playing at home. and I only hope that this competition continues to provide quite competitive competition.