DL 4104 then DL 20 at Seattle
Bozeman → Seattle → London
Timetable, Seattle time
16:55DL 4104 from Bozeman at the gate
16:50DL 20 to London leaves the gate
23 h 55 apart on the timetable, overnight
DL 20 leaves 23 h 55 after DL 4104 arrives on the timetable: more than half a day, so not a connection we count.