Bayern Munich are more focused on the Champions League because that is most important to them now and they feel that the Bundesliga is not something they should worry about since they always win it every year. Leverkusen will be more focused on the Bundesliga title because that is what is more important to them. I think it is a game of priority now and each team will go for the most preferred competition for them at this point.
Maybe that's just your own opinion because basically the two teams are currently still fighting to get the title in the Bundesliga even though Bayern Munich also continues to attach importance to the title in the Champions League this season. Likewise, Bayer Leverkusen also considers the title in the Europa League important this season by not forgetting the title in the Bundesliga this season. So as long as they are still fighting in their domestic competitions and also in leagues outside of their domestic competition, this must be equally important because in the end there will also be trophies for each competition.