Yep. We can say that Bayern became infected with instability from Dortmund. Last season, everyone laughed at Arsenal, Dortmund, United and some other teams that showed a very convincing game and then lost points out of the blue in the next game. Bayern got the same disease this season. In the next round they play against a clear outsider (even if it shows excellent results in the fight for survival), but even in such a game you cannot be sure that Bayern will win. In addition, the coefficient for the victory of Bavaria is simply ridiculous - 1.11
Bayern Munich and Dortmund have experienced the same situation this season, because both of them have had good results in successive ways but before and after consistent results, Bayern Munich and Dortmund have experienced unstable performance again. Therefore, it is not surprising that at this moment Bayern Munich and Dortmund only have a gap of 1 point.
Also, even though in the next match Dortmund looks to have quite a difficult opponent, but that doesn't mean Dortmund will lose. Likewise about Bayern Munich, getting opponents who look weaker, but that's not a guarantee for Bayern Munich to win easily. Because at moments like that sometimes the favorite teams can get bad results, maybe because the pressure is too great to make them lose concentration.
Bayern and Dortmund have completely different results before and after the World Cup. After the World Cup, Borussia has only one defeat and three draws, the rest are victories. Bayern have 3 losses and 4 draws. Huge difference. Obviously, since the difference between them is only one point in the first half, Bayern was good, as now Borussia is good. And yes, if you look at this trend, then we can assume that Dortmund has great chances, much more than the bookmakers suggest.