There are different types of interviews.
While some med schools in Canada still utilize the traditional panel-style interview, most schools are now using the MMI format.
The MMI (or multiple mini-interview) system was developed at the McMaster University Medical School to better appraise interpersonal and moral/ethical skills. This is accomplished by breaking up the interview process into several shorter, independent assessments from which your score is aggregated. This is meant to give assessors a broader, more objective view of your non-cognitive and problem-solving skills, and actually test you on skills that you are expected to have during your medical school and residency training. Using the MMI to select students has been proven to be a more accurate indicator of future success as a physician.