Looking at the statistics of the match, I think it was a match where Borussia Dortmund should be happy with the 1 point they got. They had a very tough match and Bayer Leverkusen wore them out a lot. They are unlucky not to beat because they created a lot of chances. At least they were not defeated, so we have to think like that. Bayern will be the happiest with this loss.
Looking at the game stat you can clearly see that Bayer Leverkusen can win this match, but because their luck in getting those crucial shots was really bad Borussia Dortmund got a draw and for sure the defense Leverkusen is also not a push-over and Dortmund for sure is having a hard time against them for sure as for sure if Dortmund didn't sell most of their players maybe this has a different result, for sure Bayern Munich will be happy with the result even though it is just a Draw, but they will be happier if the result was for Dortmund to win that is an easy task for Bayern Munich if that could happen,
This is not the first match in which Dortmund has acted in this way against a strong opponent, they did something similar in the match against Newcastle. For Dortmund, an away draw is a completely acceptable result, but for Bayer it is a loss of very important points, now Bayern will almost certainly be able to take advantage of these and get ahead of them, although if they win they will be equal on points, but Bayern will have a better goal difference.
For sure Bayern Munich will take everything that would let them win this Bundesliga season, and Dortmund has provided a This was really a total loss for Bayer Leverkusen because they didn't manage to take a win out of this game, and for sure Bayern Munich is realising the potential for them to make a big leap in the following opportunity as this is an open opportunity for sure, and as this is also a way for them to get into the 1st position while Dortmund lost this one, this should be a win for them,
Heidenheim had some breathing space between the matchdays 4 and 8. But now they are now very close to the danger zone again. Only 2 points away from place 16. Although it must be said that the last opponents, apart from Bochum, were not easy opponents. Their next opponent is Darmstadt. A game between two promoted teams from Bundesliga 2. Both nedd desperately a win.
Heidenheim is still safe for now, but Koln can eventually take their position, as for the number 16th position is the danger position as it is indicated on a yellow color mark which means a Regelation play-off where a team will have a game, and whichever he wins he will likely stay in the 1st division but if they lose that they will be sent to the 2nd division, for sure and 2nd division will change them with 2 new teams,