UA 5995 then DL 1979 at O'Hare
South Bend → Chicago → Salt Lake City
Timetable, Chicago time
06:59UA 5995 from South Bend at the gate
19:17DL 1979 to Salt Lake City leaves the gate
12 h 18 apart on the timetable
DL 1979 leaves 12 h 18 after UA 5995 arrives on the timetable: more than half a day, so not a connection we count.