If you look at the animation linked in the article, you can see that they did orbit each other, not only that but if you look at the time scale in the lower par

If you look at the animation linked in the article, you can see that they did orbit each other, not only that but if you look at the time scale in the lower part of the screen, you can see that they were doing that at a crazy frequency (about 8 full revolutions in the last 30 milliseconds) https://www.youtube.com/watch?v=3PKsBwH_bJE https://www.youtube.com/watch?v=3PKsBwH_bJE