https://www.geekslop.com/science-and-history/science/astronomy-and-space/2020/the-mystery-deepens-event-gw190814-2019s-epic-cosmic-collision-continues-to-baffle-scientists-and-may-rewrite-what-we-know-about-black-holes
The mystery deepens – event GW190814, 2019’s epic cosmic collision, continues to baffle scientists and may rewrite what we know about black holes.