7L 1312 then TK 6015 at O'Hare
Anchorage → Chicago → Houston
Timetable, Chicago time
12:097L 1312 from Anchorage at the gate
03:30TK 6015 to Houston leaves the gate
15 h 21 apart on the timetable, overnight
TK 6015 leaves 15 h 21 after 7L 1312 arrives on the timetable: more than half a day, so not a connection we count.