The 1:25 connection time is, of course, within MCT but not SCT (Sensible Connection Time). Delays on micro-hauls are common and all it takes is a computer rebook or some airspace restriction for a few minutes and you will misconnect. IRROPS rebooking is likely possible, but it will take a chunk out of your time in VCE and likely mean lousy seats at the last minute.

Given the change, why not look at better routings MKE-VCE? UA can force space on any UA metal and it can rebook onto any *A carrier with award space or ask that space be opened. This far out, you may have a lot of good choices.