DL 2898 then DL 5138 at Detroit
Buffalo → Detroit → Knoxville
Timetable, Detroit time
07:27DL 2898 from Buffalo at the gate
19:49DL 5138 to Knoxville leaves the gate
12 h 22 apart on the timetable
DL 5138 leaves 12 h 22 after DL 2898 arrives on the timetable: more than half a day, so not a connection we count.