With a 6 point advantage I think it is still not safe for Munich because Leverkusen still has a chance to overtake. But it seems like it will be a difficult mission Leverkusen this season is not the same as Leverkusen from the previous season.
Of course 6point is not that much for team like leverkusen to cover, but with thier performance this season I don't think if that will be possible because bayern munich is very consistent with thier performance this season, so for the fact that they draw thier previous match does not mean that they have reduced from their form. We should know how football works most times if a team have been wining for sometime, some day they might likely end up with a score of draw or even lose against thier opponent. But that does not mean that they won't win thier next match.