From a certain matchday, Bayern’s main competitors dropped points, Dortmund let what seemed like a guaranteed win slip away and ended up with a draw, while Leverkusen even lost their home game against Hoffenheim, and it looks like the fans are not very happy about it. But Leverkusen has become a different team, they lost several players, and without Alonso everything will now be different.
One match doesn't determine a team's path to the Bundesliga title, but considering Bayern Munich's current strength and their ability to beat Leipzig with a promising score, it's safe to say this team has a better chance of retaining the title. I'm not so sure about Ten Hag, as he's a coach who likes to experiment with playing positions, and he did so repeatedly during his time at Manchester United. The loss of several key players and the new style of play Ten Hag is promoting will certainly require adjustments, making it difficult for them to maintain consistency this season.