Indeed, UCL is a different league and it's very hard.
In the quarter-final qualifying competition, the two giant clubs of Bundesliga unfortunately have to meet. I thought, Leverkusen could really match Bayern Munich like in the domestic league heir. but it turned out, it was very unlucky for Leverkusen who had to get a very disappointing result. Not only a humiliating defeat of 3-0 but also a red card for one of their main defenders. So, it seems that Leverkusen has a small chance even though there is still a second leg.
The distance of 3 goals is indeed quite a lot. But if you look at this situation, is it actually like a Bundesliga match? Or there is great pressure on Leverkusen. Since the 2024 match, Bayern Munich has not won. But this record ends today, even the goal difference is quite large. Even when the match was at home, Bayern Munich had never won since.
Yes, I am aware that this time may be different. Munich's strength may not be as good as this year. In addition, Leverkusen in 2024 seems to be in full player condition. Therefore they are in their prime, and currently many players have gone to new clubs.
Source:
https://www.fctables.com/h2h/bayer-leverkusen/bayern-munich/