No you'd have to make light room write everything to each image xmp file then make dark table import that but the edits don't match perfectly. Its definitely work to move over. After switching to Linux it took me like a year to fully invest my time into it after getting annoyed enough of dual booting and now I really enjoy it almost 4 years going as a hobbyist mainly for family/travel photos and macro photography.

I also used digikam for a bit, I'd have my library in digikam and edit in darktable but ended up just preferring dark table. Digikam also manages video like light room which was nice but I almost never do video anyways