Last cycle I kinda went through the same. Your 2nd choice was probably filled via the people that selected as their 1st choice (they get a lot of applicants and if somebody declines they have a pool...
I applied to CICU. I received the official rejection email approximately 2-3 weeks after the interview. But knew I did not get the job way before then, once everyone was posting their offers
I think they begin interviewing tomorrow. Last semester I interviewed with them (did not get offer) and was not given the option to interview with another unit. But it might not hurt to ask the...