If Leverkusen can be able to hold on and get a point against Munich, then they can go the complete season unbeaten, and their chance of winning of getting point against Bayern Munich is high because they collected four points against Bayern Munich last season.
If next week when Bayern Leverkusen play at home to host Bayern Munich win. maybe the German Bundesliga championship race is over. most likely Leverkusen can win it even though they can't lock the championship because there are still many matches. but it can be said that the mentality will rise dramatically. while Munich mentally will drop in addition to the point difference also being away.