Deloitte Project Controller interview questions

The whole process took exactly one month, from the day I received an email invite to participate in the hiring process until the final answer. First the HR department conducted a phone screen with me of 30 minutes. Then I had a phone interview of 30 minutes with a Project Controller Manager. About two days later I learned I went well on that interview, then I was invited to come to the office for the final interview with a manager and two senior managers. Everyone was really nice and the interview was not difficult. They did not ask me any unreasonable question, and I thought I had done well, but I did not get a job offer. After the final interview, I received a rejection email from the HR 3 days later.