first interview was quick with HR and with the manager on the unit, second interview was with a different person in HR and then a longer day on the unit following someone

I was hired by HR -- staff there took me to two floors (units) that were looking for new SNAs. I was shown around by the Nurse Manager of those units, and they asked me a few questions about how often I could work, if I thought I would be capable of the duties required of me for the unit, etc. Afterwards HR let me choose one of the two floors I liked better, and I went to that unit a week or so later for a second interview -- this was basically shadowing a milieu therapist and having them evaluate whether I could get along with the patients.