DL 4034 then DL 4989 at Detroit
South Bend → Detroit → Knoxville
Timetable, Detroit time
16:37DL 4034 from South Bend at the gate
16:10DL 4989 to Knoxville leaves the gate
23 h 33 apart on the timetable, overnight
DL 4989 leaves 23 h 33 after DL 4034 arrives on the timetable: more than half a day, so not a connection we count.