4Y 77 then 4Y 10 at Frankfurt
Calgary → Frankfurt am Main → Cancún
Timetable, Frankfurt am Main time
10:454Y 77 from Calgary at the gate
10:104Y 10 to Cancún leaves the gate
23 h 25 apart on the timetable, overnight
4Y 10 leaves 23 h 25 after 4Y 77 arrives on the timetable: more than half a day, so not a connection we count.