WN 8507 then B6 1302 at Phoenix
Everett → Phoenix → Boston
Timetable, Phoenix time
05:05WN 8507 from Everett at the gate
23:59B6 1302 to Boston leaves the gate
18 h 54 apart on the timetable
B6 1302 leaves 18 h 54 after WN 8507 arrives on the timetable: more than half a day, so not a connection we count.