DL 143 then DL 438 at Seattle
Amsterdam → Seattle → Boston
Timetable, Seattle time
12:06DL 143 from Amsterdam at the gate
11:45DL 438 to Boston leaves the gate
23 h 39 apart on the timetable, overnight
DL 438 leaves 23 h 39 after DL 143 arrives on the timetable: more than half a day, so not a connection we count.