AA 2896 then UA 1780 at DFW
Chicago O'Hare → Dallas-Fort Worth → San Francisco
Timetable, Dallas-Fort Worth time
00:43AA 2896 from Chicago O'Hare at the gate
15:16UA 1780 to San Francisco leaves the gate
14 h 33 apart on the timetable
UA 1780 leaves 14 h 33 after AA 2896 arrives on the timetable: more than half a day, so not a connection we count.