Exactly, van Gaal played a major part in Bayern‘s success in the following years. He implemented the basics, the fundamentals of possession football. Based on this, Heynckes adjusted it slightly and chose a more balanced approach, which imho resulted in one of the best team performances I’ve seen so far. Guardiola then again was similar to van Gaal, just more likeable and less of a military governor. However, since Pep left the club, Bayern isn’t as good as they used to be in terms of possession football. Sure, there are many ways to be successful, i.e. Real Madrid is hardly playing possession football, they have a more pragmatic style and simply high quality players, but I guess Bayern wants to go “back to the roots” or improve in the possession area. Kompany however should not make the mistake to play pure possession football and be able to adjust his style against strong opponents. Tuchel for instance is more pragmatic, which is why Bayern was able to beat Arsenal and was on par with Madrid in the semi finals.