Had a prescreen interview with hiring manager and then a four hour in person interview with hiring manager and three other managers, separately (4 one-hour interviews). The final one-hour interview was with the hiring manager, the one the previous week I had a prescreen over the phone. He was obviously bored by the process, openly yawning (did the same during the prescreen), kept looking at his phone messages and had a sneer on his face that was very off-putting. The interview ended up being 20-25 minutes; perhaps he was running behind. I was then rushed out and told if I went further (with yet more interviews!) it would be a week. Never heard back from the company.