Dortmund had a good opportunity to close the gap Bayern have on them in the bundesliga table, but they threw it away in the last minute of the game. Bayern didn't have a good week, they lost to manchester city and drew to Hoffenheim 1-1, Tuchel has only won two games since he took over from Julian Nagelsmann, the club will not be happy with what he has done so far. Dortmund are very inconsistent, they scored very late in the game against Stuttgart, but they allowed them to equalize in the last minute of the match to make it 3-3, so the top two teams drew, and Bayern are still above Dortmund with two points, it is still not over in the bundesliga, i don't trust Bayern to win this bundesliga title.
This is how you lose the title. You have a player more a big lead and you end up drawing the match. Its like they hit the self-destruct button,this was the perfect chance for Dortmund to grab a win and make Bayern uncoftorble. Also bayern almost lost all points against Hoffenheim that played really good attacking football