UA 2767 then UA 3237 at Houston
Seattle → Houston → Mc Allen
Timetable, Houston time
06:13UA 2767 from Seattle at the gate
19:45UA 3237 to Mc Allen leaves the gate
13 h 32 apart on the timetable
UA 3237 leaves 13 h 32 after UA 2767 arrives on the timetable: more than half a day, so not a connection we count.