Hi! Not sure I fully understand the 2nd part of your question. I am at the Portland, OR CHC and myself and most of my classmates began doing full patient encounters during our 2nd year (including H&P, OMT when appropriate, patient counseling/education, presenting to preceptors, etc.). I am sure that how much you are able to do depends on the site and your preceptor.
It was nice to develop more confidence in patient encounters early on but I don't think it really relates much to what you are asking about audition rotations. Could you clarify?