DL 1626 then DL 4010 at Detroit
St Louis → Detroit → Lexington
Timetable, Detroit time
09:13DL 1626 from St Louis at the gate
08:25DL 4010 to Lexington leaves the gate
23 h 12 apart on the timetable, overnight
DL 4010 leaves 23 h 12 after DL 1626 arrives on the timetable: more than half a day, so not a connection we count.