LinkedIn Data Science interview questions

Got a phone interview from HR, and did not hear anything back ever since. Don't know if the interview process need to take so long. The HR said there will be some follow up interviews but has not heard anything back for over 3 weeks.

Applied on LinkedIn website, got a call back from the recruiter the next day. Did a phone screening and was selected for a technical interview. The interview questions are mostly about case questions and technical-behavioral questions, such as given the total number of LinkedIn users, how much impressions did LinkedIn impressions were prompted? Mostly testing your knowledge of LinkedIn customer market and analytical ability.