UA 678 then UA 6086 at Houston
Mc Allen → Houston → Shreveport
Timetable, Houston time
08:24UA 678 from Mc Allen at the gate
07:00UA 6086 to Shreveport leaves the gate
22 h 36 apart on the timetable, overnight
UA 6086 leaves 22 h 36 after UA 678 arrives on the timetable: more than half a day, so not a connection we count.