It's hard to really say much or little. At the beginning of the season everyone wrote Leverkusen off, but now they are four points behind Bayern. Only half of the season has passed and if Liverkusen remain stable, then we can start to think that it is dangerous for Bayern, but now I agree with you that they are very far from the first place, Bayer play a lot of draws.
A lot of people really didn’t think Bayern Leverkusen would be able to perform this well because of how they started the season it was really kind of disappointing but funny enough they didn’t lose a lot of matches they just draw a lot of matches and lost points in the process but then they were still able to bounce back after the set backs. They are just 4 points behind Bayern Munich and have improved their performance for a while now and that makes them a title contender this season again. Four points is not very far from first place so Bayern Munich needs to be very careful because dropping any points will put pressure on them and with the form Leverkusen are in they are a big threat and capable of challenging Bayern Munich for the title.