Interesting. I applied to DO about ten weeks ago. I had an initial phone screen, and they sent me a code challenge. I completed and turned in the challenge. Then I heard nothing for two weeks. I reached out to my contact there, and she got back to me a week later saying, "I've been waiting on feedback - sorry it's taking so long! I just pinged the manager again this morning." That was the last I heard from DO.
I feel like I wasted the half-day I spent on their code challenge. I don't expect a job, but a simple "Thanks but no thanks," would be nice.