5X 602 then TK 6015 at O'Hare
Louisville → Chicago → Houston
Timetable, Chicago time
03:355X 602 from Louisville at the gate
03:30TK 6015 to Houston leaves the gate
23 h 55 apart on the timetable, overnight
TK 6015 leaves 23 h 55 after 5X 602 arrives on the timetable: more than half a day, so not a connection we count.