phone interview with hiring manager, the recruiter contacted me a week earlier. The hiring manager is very nice but I still have no idea how it goes. It only took 15 minutes. I didn't know the answer but I think I failed.

On site interview is horrible. They arrange 13 ppl to meet in the whole day from 9 to 5 without a break, and didn't book me a direct fight from Houston to Columbus. I was exhausted after the interview when arriving home at 2:00am in the morning.