Grover Project Manager interview questions

First a HR person, for overview. Then hiring manager some more in depth. Then multiple technical interviews and a cultural interview. The technical interview is done by co-workers and the cultural interview by someone in another division and is especially instructed not to assess the technical fit for the role.

At the beginning the process was smooth. The first round was with HR, followed by an onsite interview with CPO, Design, and Tech team members. After the successful round, I was asked to complete a case study, which I did with a given deadline. After submission, I never heard from them. No feedback, no reject. No communication that the position has been filled. Waste of time and very unprofessional.