One of the SAT-MEM flights is now principally a Delta flight - DL5730 is the early morning SAT-MEM flight. It's operated by Mesaba, but it's considered Delta Connection....

The 5 EMB-175 flights (2x DTW/MSP, 1x MEM) and a Pinnacle CRJ to MEM are all still NW-flight numbers as the primary flight numbers. There might be DL codeshare numbers on them, but they're technically NW Airlink.