UA 4450 then G4 1397 at Newark
Portland (Maine) → New York → Knoxville
Timetable, New York time
12:29UA 4450 from Portland (Maine) at the gate
09:55G4 1397 to Knoxville leaves the gate
21 h 26 apart on the timetable, overnight
G4 1397 leaves 21 h 26 after UA 4450 arrives on the timetable: more than half a day, so not a connection we count.