Indeed, until today the unbeaten record is still owned by Leverkusen. But with the condition of the difference in points not much I think there will still be many opportunities for Bayern Munich. There will still be many matches and surprises. In addition, the transfer season will change a lot of circumstances and strength. I admire Leverkusen but I'm not sure they can win. I think this will last until the end of the season. The championship will probably be decided by the end of the season.
Bayern Munich needs to win straight two game along side Leverkusen loosing two straight games too for Bayern Munich to finally top the table with just a point difference and with Leverkusens performance so far and their recent form, I doubt if they will just let go of two game consecutively without a draw or win still.
It's very true Bayern Munich have still got a chance to getting to the top of the table but then it will mean that Leverkusen will slack a while before such can happen, by Munich's next fixture, they have a good chance at tightening the gap between them and Leverkusen to the top of the table but then if Leverkusen wins their next game, they will be able to still maintain the gap, they will also maintain a close margin if the get a draw, at this point both teams still have almost equal opportunity at the trophy.