In my opinion, Leverkusen's journey this season is indeed very extraordinary, only by relying on modest players they can win the Bundesliga, besides that the Europa League will of course be their target this season, because as you said, we no longer see a strong competitor for Leverkusen if later in the second leg Liverpool and Milan are not able to make a comeback and must be eliminated sooner than the Europa League, So far we see if 3 teams that have the potential to win the Europa League are Milan, Liverpool and Leverkusen but of the three teams it is Leverkusen who is now in a safe position to advance to the semifinals.
They have shown their best game this season and it is clear that Leverkusen must be able to continue their best game at the next level because in the domestic league they have shown their prowess and finally managed to win the title in the Bundesliga while breaking Munich's dominance in the Bundesliga for several seasons, apart from this in Of course, in the domestic league, Leverkusen must rise to the next level, namely winning the UEL title this season because if they succeed it will make this team have to rise to an even higher level.
If Leverkusen is able to be a treble winner this season by winning the Bundesliga title, DFB and UEL trophies, of course that will make them a team that will be highlighted by many football fans. Leverkusen must move up to the highest level, namely the UCL, where they will definitely play there next season. At least moving to the next level in the highest competition in Europe, Leverkusen can show their best game and Xabi Alonso has the opportunity to show his abilities as a head coach. If he can qualify for the important UCL round that would be good. Their path should be smooth to win the UEL this season if Liverpool and Milan fail.