The competition between these two teams looks very tight, just like last season where Bayern Munich and Leverkusen fought for the Bundesliga title. Bayern Munich must perform consistently if they do not want to lose their first position, while Leverkusen also tries to continue to put pressure on Bayern Munich. Their meeting later might determine their results. If Leverkusen wins against Bayern Munich, their points difference will be closer and they have the opportunity to defend their title for the second time.
I actually want to believe that Bayern Munich knew it much earlier before now that they are going to have Leverkusen as their biggest rival and contender for the trophy this season so making sure they are going to be able to stay ahead of them was one thing that was supposed and going to be their priority this season and now the the distance has been closed to the point is just four point difference is some how disturbing but then Munich still have the chance to still staying ahead.
They must have prepared for that because after all Leverkusen are the defending champions so they must have thought about the possibility of Leverkusen being a contender for this season but in the end such things won't really matter because for Kompany he just has to show and prove himself that he can be consistent and can improve the performance of Bayern so that in the end the championship will follow because indeed good performance and consistent wins will push them slowly to that path.
As for their competitors, they must be aware that anything is possible because not only Leverkusen are being watched but some clubs like Dortmund and Leipzig are also always predicted to enliven the competition at the beginning of the season not to mention some dark horse clubs although for now we still don't see the movement of unexpected clubs after Freiburg and Union Berlin currently cannot do much for their performance unlike the previous few seasons.