why is there danish shows in a lost over shows from Sweden

Hi! All you beautiful movie-nerds.

I have a question about this seartchlist.

(In the link below). And my qurstion is. Why is their shows from Denmark

(as brottet / rejseholdet) in the list.

Is it becuose the show has a Swedish distrubitor or that it has been

co-produced

by a.swedish company.

https://www.imdb.com/search/title/?title_type=tv_series&countries=SE