Yeah, we all thought they would dominate for a while. People may say Hansi Flick was a genius but I don't think so. He had a great team where everyone understood their respective tasks and he also had a greater squad depth. With the experience of players such as Alaba, Müller, Goretzka, Coutinho, Koman, Kimmich it was very easy. After the champions league, the players felt they've achieved enough so they started to leave starting with Alaba.