Canonical Software Developer interview questions

After I submitted the application in their website, they sent me a series questions and ask me to compose a essay to answer it. They said they expect you to spend 1-2 hours to finish it. While the most questions are quite general, like who's the competitors of Canonical? and how you think Canonical can win? something like that. And some questions are about how you were doing in College or High school. I am not a native speaker, so it took me much more time to finish it. Then they sent you a Aptitude test. I don't think it's like a intelligent test, it's more like testing your speed of some specific kind of questions. Finally, I got their reject letter. I never encountered this kind of interview that interviewer turn you down without asking any technical question.

Screening -> written interview -> ability test -> personality test -> hr interview -> linux interview -> programming interview -> get stalled for 2 months -> ceo screen -> get stalled for 2 months -> get informed as you are going to meet with the teams in a week -> get ghosted for 3 weeks -> 1-3 interviews by hiring managers of the chosen teams by ceo -> offer