Uber Data Scientist interview questions

I applied online (Uber Marketplace team) and heard back from recruiter about 2 days later and scheduled the initial phone screen 3 days from I submitted my application. Amazed by how fast they acted. Then they scheduled a tech phone interview with a current data scientist from the team. The data scientist was very professional and the interview process was very pleasant. Heard back that I passed a day later. Then the next step is a take home challenge given 7 days to finish. There were several tracks you are allowed to pick (ML, Operations, Stats, etc.) depending on your background. I submitted the take home. Took about 2 weeks to get feedback. I was pretty confident about the take home but unfortunately the team decided not to move forward. No feedback was provided regarding why I did not pass the take home.

Phone Screen + Take Home Challenge + On Site. The whole process took almost two months. People from the team are nice but the recuiter is very unresponsive and unprofessional.