UA 6624 then G4 1397 at Newark
Halifax → New York → Knoxville
Timetable, New York time
12:02UA 6624 from Halifax at the gate
09:55G4 1397 to Knoxville leaves the gate
21 h 53 apart on the timetable, overnight
G4 1397 leaves 21 h 53 after UA 6624 arrives on the timetable: more than half a day, so not a connection we count.