Johanna Clausen Koerner? (Though, I'd definitely say Rebecca is more prominent?)The question was about whether the relative was a prominent cyclist full stop, and not whether the relative was more prominent than my pick. I would have answered yes to the question, if Rebecca had had better results in diving outside of Denmark though, cause Johanna Lucia Clausen Koerner is the correct answer.
She has been riding for the club associated with the University of Aarhus where she studies medicine, but she will be moving to ABC (The Worker's Cycling Club) on January 1st, right when her sister officially leaves the team. She used to do aikido, and has apparently also traveled to Japan in order to study it for a month a few years ago. I don't know whether she got interested in cycling through her sister or not, but she doens't seem to have been competing in it prior to this year (her sister didn't before 2020 either). I also don't know if she plans to attempt to follow in the footsteps of her sister (or doctors like Chabbey and Reusser). This year she's only had a B licence, but has won multiple races, so I assume she will be riding in the Danish A rank next year.