AC 591 then DL 954 at Houston
Toronto → Houston → Detroit
Timetable, Houston time
10:58AC 591 from Toronto at the gate
15:35DL 954 to Detroit leaves the gate
4 h 37 apart on the timetable
Today
From the airport’s board at 06:17 Houston time
10:58AC 591 due at the gate, no estimate yet
15:35DL 954 due to leave, no estimate yet
4 h 37 between the gates, on these times
The last days
AC 591 and DL 954 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.