Bayer can now focus entirely on the Bundesliga, they don't have any prerequisites yet to hope that they can defend their champions title, but they have to try to do it, and for that they need to win all the matches, they can't lose points, so even though Bochum is not the easiest team, I expect Bayer to beat such an opponent. On the other hand, I doubt that Bayern will lose the difference that they were able to make.
Bayern is an excellent club, and I don't see anyone capable of winning the Bundesliga because they are the ones with the highest points. This is one of the reasons why everyone has full assurance that they will win the Bundesliga, and if you look at it Bayern is already a made club, but even at that kompany is doing his job very well, and if he even wins the trophy, it is because even the points they have accumulated are enough to make them win, but Leverkusen is not even close enough to say that they can win the trophy. And we all know that Bayern will not lose any game, and even if they do, they will still make up for it. So they still have better chances.