Airbnb rejected me after the deep dive

Just wrapped up the loop with Airbnb, got the rejection today. Phone screen was the account merge problem, basically DFS over connected emails, went fine with time to spare. Onsite had two coding rounds, one being the booking overlap problem where you minimize stays to cover a set of nights. Got it working with memoization but ran over cleaning up edge cases. System design was the chat system, they wanted the full schema plus how you'd route sockets across multiple servers. Then the deep dive, they spent almost 90 minutes on my resume project and that's apparently where I lost it tbh. Rejection came a week later, no real feedback beyond not hitting the bar.