Last year, I had a final interview with the CEO at Vopay, and they completely ghosted me after the 3 rounds of interview. The first interview was a 30-min call with a product manager. The second interview was an in-person interview which is a whiteboard challenge but you'll be provided documents and conduct it solo for 30-40 minutes, then present it to the product manager for the last 15 minutes. Lastly, you'll have the final interview with CEO for about 30 minutes. Questions weren't very technical but more related to your thinking process and goal.