AZ 615 then U2 6103 at Fiumicino
Boston → Rome → Munich
Timetable, Rome time
07:15AZ 615 from Boston at the gate
12:20U2 6103 to Munich leaves the gate
5 h 05 apart on the timetable
Fiumicino’s board shows about 63% of departures at their timetable time, so delays of a few minutes don’t show here.
The last days
AZ 615 and U2 6103 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.