In a couple weeks I'm flying NRT-MSP for business, arriving 11:00. I have award travel booked MSP-DTW-TVC departing at 13:10 same day. If (let's hope not) my flight from NRT is significantly delayed such that I'd miss my 13:10 flight, will they honor it as a "missed connection" and re-route or try otherwise to get me there? Or will they say "tough luck" since it's on two different itineraries?

Normally I wouldn't care since there's plenty of MSP-DTW flights, but I need to make that 17:14 DTW-TVC connection.

Thx
MSP_vibe