TP 8487 then UA 2858 at Newark
Chicago → New York → Los Angeles
Timetable, New York time
15:15TP 8487 from Chicago at the gate
17:00UA 2858 to Los Angeles leaves the gate
1 h 45 apart on the timetable
The last days
TP 8487 and UA 2858 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.