BR 662 then UA 5940 at O'Hare
Anchorage → Chicago → Tucson
Timetable, Chicago time
06:39BR 662 from Anchorage at the gate
19:54UA 5940 to Tucson leaves the gate
13 h 15 apart on the timetable
UA 5940 leaves 13 h 15 after BR 662 arrives on the timetable: more than half a day, so not a connection we count.