I think bayern Munich ar becoming way too relaxed and it's a problem, it can start out as fun and games unit they lose their position on the board. Bayern were winning all their matches until now. On the other hand I dont think borussia Dortmund can continue to maintain a winning streak .They used to be in form till now, but irrespective of this bayern has more chances of winning the league title.
some of the things they gave as penalty you would be wondering why they gave penalty for it because the Bayern Munich conceiving penalty doesn't look obvious to be a penalty but the moment the Hamburger did as if the tackle was serious on him they gave them penalty, apart from the penalty hamburger was supposed to be too easy for victory on Bayern Munich but it was like the three points wasn't important. Bayern Leverkusen was the team with hard match than Bayern Munich because Frankfurt is like them but they were so smart and good method of navigating goals.
I admit that Hamburg played quite effectively, but no matter what happened, I think the final draw was good enough for Hamburg because Bayern Munich is the strongest team in the Bundesliga, and Hamburg getting just 1 point is already quite good.
As for Leverkusen's win, I don't think it's surprising. So far, Leverkusen has indeed played quite well and effectively, and Frankfurt couldn't match that. However, unfortunately, Leverkusen's problem this season is that sometimes they seem unable to show their best performance in every match, which causes them to fall further behind in competing at the top of the standings.
Holding Bayern Munich to a draw is an achievement right now because we know how strong Bayern Munich is now, it's already very good even if it's a draw, especially if you can score a win over Bayern Munich that would definitely be even better, but you don't need to go that far to be considered great as Bayern Munich's opponent.
Leverkusen have indeed improved in the last few weeks so it is very natural for them to win the match because they have returned their enthusiasm to the field to get the best position in the league, they need lots of match tickets next season, especially in the Europa League, they want revenge there.