Broke the brake lines.
While tightening the nut, and holding the ferrule, the fitting broke.
Not knowing if I did something wrong I decided to break another one and it snapped super easy.
After looking at it and seeing how little material connects the stem, nut, ferrule, I figured there had to be a better fitting.
Found out they make the rubber style one piece fitting and use an aluminum knurled sleeve to take up the space for SS braid.
Both old and new are DOT but the one piece is way stronger.
Thanks to Bebop for helping sort it out.
That seems like a real crappy design for a DOT rated line. Good catch, and it's much better to figure it out now as opposed to finding out on a trail.