Xabi guidance this season has the aim of winning the title in the bundesliga and in other european league competitions so that Leverkusen has stronger stability at the moment to the point that it has never been defeated, even Bayern Munich feels challenged by Leverkusen performance which looks more consistent as you said.
but if Leverkusen wants to win the title here, at least they have to really maintain the team consistency and immediately give up more or less points difference so that they can't catch up with Leverkusen points.
To break Bayern Munchen dominance in the Bundesliga, Laverkusen must be able to beat teams like Dortmund, Stuttgart, Leipzig and especially Bayern. Xabi Alonson must succeed in securing 3 points in the future when facing these teams. If you can't beat them or are only able to draw, winning the Bundesliga trophy and breaking Bayern dominance will be quite difficult. This means that Bayern will have to lose a lot of points in their matches, and thus Laverkusen will go on and lead the standings by beating mediocre teams.
I don't think it's a good idea, hoping that Bayern will lose a lot of points and make it easier for Laverkusen to lead the standings. We have seen Dortmund press Bayern every season, but always fail for a decade, which means winning the Bundesliga means being able to beat Bayern, if that can be done then Xabi has a big chance of lifting the trophy at the end of the season. There are currently only 20 matches remaining, we will see how far the good fortune of being friends with Laverkusen this season goes.
I believe Xabi Alonso has the capability to win the Bundesliga this season,just as Girona are doing in the Lalliga, they have also proven to be one of the best teams in the Bundesliga this season.Leverkusen are currently topping their table,and I think even if they are not able to secure wins against Bayern, Stuttgart, Liepzig,Dortmund and the rest,and they can have a draw when they meet those big teams,and also go on to win other of the smaller teams when they play them,then, I think they have a chance in securing the Bundesliga tittle.
Xabi Alonso has really tried,making his team to still top the table till this moment,it's really a great job done by him,and with the way they are now,they will hardly lose a match,whether they play against big team or small team,the goal is to keep on winning till the season ends.