AA 910 then UA 602 at Miami
Medellín → Miami → Chicago O'Hare
Timetable, Miami time
05:05AA 910 from Medellín at the gate
17:10UA 602 to Chicago O'Hare leaves the gate
12 h 05 apart on the timetable
UA 602 leaves 12 h 05 after AA 910 arrives on the timetable: more than half a day, so not a connection we count.