Energy Information Administration interview questions

Applied via the usajobs.gov website then waited a month for the posting to close. A few weeks later was reached out via email from one of the team leads for a phone interview. After the phone interview, was invited about 2 weeks later for a skype interview with several team leads and the office director. Got an email from HR a month later saying I got the job, providing I pass their background check (non-secret, just a general check).

Once the job closed on USAJOBS, I was called within a week for an interview. Had a phone interview the following Friday, and then asked for an in-person interview the following Monday. Interviewers had 3 other candidates to interview during the following week. Received a phone call two weeks from my interview from HR asking i I still wanted to job and if they can perform a security check on me. No official offer made for two weeks after that.