It is Pinnacle: FWA to MSP, then on to LAS, with 35 minutes connection time in MSP.

There's an alternative route, FWA-->DTW--->LAS with only 31 minutes connection time, but the FWA to DTW is almost always on time or a few minutes early. I would change to that route, but Delta wants $150 to change. Lesson learned for this inexperienced flyer is to check on-time performance before choosing flights, especially when there is a tight connection time.