UCLA Health Research Associate interview questions

After 4 interviews with the hiring managers (doctors) and the process over 5 months (application to rejection) with team members, 1 assessment, and a follow-up on the evaluation, I received an email from one of the hiring managers saying that they are reassessing the needs of the role within their team. After 2 weeks, the job offer was published again. I understand there was no fit at that time but after 5 months of application process and meetings, I would have expected more details about my application. The positive sign is that everyone I interviewed with was very professionally polite.