I had several rounds of interviews - beginning with an HR screen, next a video meeting with a hiring manager, and then a case study was assigned which was sent in an email with a due date in less than 2 days. After the case study due date passed, I was then scheduled for a 4-hour in person interview to present the findings from the case study. The day of the interview I met with 4 people individually for around 30-45 minutes each, and then the presentation of the case study in front of ~7 people. I had what I thought was a good experience with who I met with and how the presentation went. They asked some technical questions that were tough to answer on the spot in front of 7 people. I never heard any feedback from the company, and after 3 weeks of waiting I reached out to the HR contact and thankfully, they responded saying they had offered the position to someone else. I think after so much time (and time off of my current job) the least they could have done is let me know the status of the position.