UA 1898 then DL 2709 at Houston
Baltimore → Houston → Atlanta
Timetable, Houston time
08:37UA 1898 from Baltimore at the gate
08:05DL 2709 to Atlanta leaves the gate
23 h 28 apart on the timetable, overnight
DL 2709 leaves 23 h 28 after UA 1898 arrives on the timetable: more than half a day, so not a connection we count.