DL 1697 then UA 723 at Boston
Phoenix → Boston → Houston
Timetable, Boston time
21:00DL 1697 from Phoenix at the gate
17:17UA 723 to Houston leaves the gate
20 h 17 apart on the timetable, overnight
UA 723 leaves 20 h 17 after DL 1697 arrives on the timetable: more than half a day, so not a connection we count.