AA 4504 then UA 695 at O'Hare
South Bend → Chicago → San Juan
Timetable, Chicago time
18:35AA 4504 from South Bend at the gate
14:16UA 695 to San Juan leaves the gate
19 h 41 apart on the timetable, overnight
UA 695 leaves 19 h 41 after AA 4504 arrives on the timetable: more than half a day, so not a connection we count.