UA 574 then WN 4553 at Phoenix
Boston → Phoenix → Milwaukee
Timetable, Phoenix time
19:31UA 574 from Boston at the gate
18:50WN 4553 to Milwaukee leaves the gate
23 h 19 apart on the timetable, overnight
WN 4553 leaves 23 h 19 after UA 574 arrives on the timetable: more than half a day, so not a connection we count.