Dortmund has chance for qualifying to final round after last time on season 2012/13 against Bayern Munich, actually has opportunity with Bundesliga final teams in Champion League if Dortmund can beat PSG and other way Bayern Leverkusen success eliminating Real Madrid in the semifinal round.
Dortmund have an amazing season in Champions League so far and it is more strange and surprising that they are doing it when they don't have good performances and position in Bundesliga. It's quite strange that they can go too far like this in Champions League but are still struggling to get a high position in their domestic league. This season is terrible for Dortmund in Bundesliga because last season, they ended it as a runner up and competed very well for a league trophy till a final day.
Have been ten more ten years ago without Bundesliga teams final match in Champion League and this season Bayern Munich and Dortmund have chance to make it again after success qualifying to semifinal round.
For Bayern Munich last edition lead to final on season 2019/20 with pandemic era and most of knock out round match playing as single match without home and away match.
Usually Bundesliga only has Bayern Munich as their best representative in Champions League and other clubs like Dortmund don't go too far in this tough competition. It explains why chance for a Champions League final match between two Germany clubs is very rarely. Even for stronger leagues like Serie A, La Liga or Premier League, it don't happen too often.