NPL Construction interview questions

Very informal and left me wondering what I said or did that was wrong in the interview. At end of I interview I was told that it would be a month before the would make a decision. They told me they had. couple more people to interview. The next day, I saw that the position was reposted.

A panel of three/four interviewers over two interviews. The process was fine, but the offer was ambiguous and seemed to be final. word, word, word, word, word, word, word, word, word