I don't understand why people seem to think airlines do this all at once. My pilots do turnarounds, there is nothing extra though. Every flight is done individually, they are in no way connected apart from on the pilot's bookings.
Your pilots can fly DTW-ORD then have a 30 min turnaround before ORD-MSP but the two flights will have separate bookings, separate PIREPs, seperate flight plans and so on. They are not connected.