You are either
1) Stating that there will be zero turnaround time between someone finishing their primary interview in October and being interviewed, or
2) In need of reading comprehension practice before for your verbal reasoning section
Most applicants fill out what's called a secondary application after their primary application is complete. Then, they have to wait
eek
until the admissions office gives them dates to interview. It's perfectly reasonable to state that an entering class may be half to 3/4 full by the time an applicant who was complete for primary app in october does the secondary, gets the interview invite, and completes the interview