AA 4094 then UA 747 at O'Hare
Cincinnati Northern Kentucky → Chicago → Baltimore
Timetable, Chicago time
06:10AA 4094 from Cincinnati Northern Kentucky at the gate
18:29UA 747 to Baltimore leaves the gate
12 h 19 apart on the timetable
UA 747 leaves 12 h 19 after AA 4094 arrives on the timetable: more than half a day, so not a connection we count.