BR 642 then UA 2672 at O'Hare
Anchorage → Chicago → Pensacola
Timetable, Chicago time
11:55BR 642 from Anchorage at the gate
10:57UA 2672 to Pensacola leaves the gate
23 h 02 apart on the timetable, overnight
UA 2672 leaves 23 h 02 after BR 642 arrives on the timetable: more than half a day, so not a connection we count.