DL 2247 then FX 9791 at O'Hare
Salt Lake City → Chicago → Anchorage
Timetable, Chicago time
12:03DL 2247 from Salt Lake City at the gate
04:00FX 9791 to Anchorage leaves the gate
15 h 57 apart on the timetable, overnight
FX 9791 leaves 15 h 57 after DL 2247 arrives on the timetable: more than half a day, so not a connection we count.