Bundesliga and the Champions League will be more important, especially since they are currently still ahead in points in the Bundesliga standings which I think will benefit them. Munich has not been defeated in 13 matches and it will be very comfortable for them if they maintain their performance until the end of the season. Leverkusen is not as good as last season, so it is an advantage for Munich who is currently still leading.
With the quality of the individuals Leverkusen have I already thought they would be a one-season wonder like Leicester when they won the Premier League. Leverkusen's performance last season was absolutely fantastic and they almost managed to have an unbeaten season in all competitions. At that time with the players they had who were of average quality but the strategy implemented by Alonso made them a very solid team. But this season their performance has returned to being average. I think with the quality of players Leverkusen have it is very difficult to maintain good performance in every match. Other teams have read their tactics and of course have anticipated it.
I wouldn't say Leverkusen's performance as a team that won the Bundesliga trophy last season is mediocre at the moment. They are still playing well, it's just that their performance is not as good as last season. If Xabi Alonso gets the players he wants in the transfer market later, maybe he will fix his shortcomings this season. Although they are behind Munich in points, they still maintain their position in the standings well. Their chances for the Bundesliga trophy may be getting smaller, but they still have other competitions that they can try. So does Munich.