UA 3287 then UA 2005 at O'Hare
Greenville-Spartanburg → Chicago → Charlotte
Timetable, Chicago time
15:31UA 3287 from Greenville-Spartanburg at the gate
19:58UA 2005 to Charlotte leaves the gate
4 h 27 apart on the timetable
The last days
UA 3287 and UA 2005 weren’t both flown 15 min to 12 h apart in the last 21 days.
Statistics from past flights, not live flight information. Always check times and your connection with your airline, and don’t base travel or booking decisions on these numbers.