Actually, in the UCL this season, I initially hoped to see surprises from several clubs that made surprises in the domestic league last season. Like Leverkusen, who made an unbeaten record in the Bundesliga, Girona, who was even a very strong team last season in La Liga, then there is Bologna, who was also surprising in Serie A because they managed to finish in 5th place without anyone expecting it. But it looks like Bologna and Girona are having a tough start to the UCL. Meanwhile, Leverkusen looks like they are starting quite well in the UCL. Because until now Leverkusen has not lost in the 2 matches that have been played.
You should also check their performance in their own domestic league in this season, both Bologna and Girona performance are terrible, while Leverkusen is still fine even though not as strong as in the last season. But, Leverkusen met easier opponents, like Milan and Feyenoord, which is nothing surprising they can won those match.
After all we still have many upcoming match, Girona is quite lucky their opponent not that strong.
Yes, Leverkusen is still showing their good quality this season in the Bundesliga, even though it is not as good as last season. Because Leverkusen's main focus is definitely just to secure tickets to the UCL again and an even more important focus is to achieve good results in the UCL that is being played. And everything seems fine for Xabi Alonso and his Leverkusen team.
Meanwhile, Girona is currently in a difficult position even in La Liga. Girona are currently ranked 12th in Laliga and that is not a good thing at all, after 10 weeks there. Meanwhile, Bologna is much worse. Because they are ranked 13th in Serie A this season. But I understand it. because Bologna is starting over with a new coach this season.