Dortmund and Bayern Munich were really great at the last game weekend. Dortmund got a very comfortable win against Freiburg by 5-1 and it was more than delightful to me. But Bayern Munich's doing the same against Koln didn't make Dortmund very happy obviously. Bayern Munich ended Koln by 4-0 and Lewandowski had such a perfect performance by a hat-trick. It was like a retaliation to Haaland as he scored two goals in the Freiburg game. 
Now we still see a 6-point difference and I see that Dortmund have a very tough away game ahead vs Hoffenheim next week.
Freiburg and Bayern are different opponents and Dortmund will have a bigger challenge when their opponent is Bayern. I don't know Dortmund begin match against Bayern fearfully or not but such matches are never easy for Dortmund. Especially when they have to begin with a lower position and big point gap need to be filled or reduced. Now we still see a 6-point difference and I see that Dortmund have a very tough away game ahead vs Hoffenheim next week.It brings pressure on Dortmund players and can indirectly make them play worse than what they usually do.
Right now dortmund are only behind by 6 points and if they are consistent enough this season, of course it won't be difficult for them to catch up with these points later, especially for bayern munchen later when the round of 16 champions league begins, bayern munchen will have a busy schedule and of course of course they will lose focus and possibly slip in the league
6 points are not too big but there are two big questions- Will Dortmund be able to play well in rest of season?
- Will Bayern lose focus then lost so many points in Bundesliga because of Champions League?
In many seasons, Bayern have to play in Champions League but they still manage to win in Bundesliga. So what reasons make you think that they will not be able to do the same in this season?