UA 5521 then BR 641 at O'Hare
Cincinnati Northern Kentucky → Chicago → Taipei
Timetable, Chicago time
13:05UA 5521 from Cincinnati Northern Kentucky at the gate
12:40BR 641 to Taipei leaves the gate
23 h 35 apart on the timetable, overnight
BR 641 leaves 23 h 35 after UA 5521 arrives on the timetable: more than half a day, so not a connection we count.