UA 1818 then AC 7070 at LAX
Tampa → Los Angeles → Montréal
Timetable, Los Angeles time
11:30UA 1818 from Tampa at the gate
23:35AC 7070 to Montréal leaves the gate
12 h 05 apart on the timetable
AC 7070 leaves 12 h 05 after UA 1818 arrives on the timetable: more than half a day, so not a connection we count.