KL 1604 then U2 7837 at Schiphol
Rome → Amsterdam → Edinburgh
Timetable, Amsterdam time
15:20KL 1604 from Rome at the gate
11:40U2 7837 to Edinburgh leaves the gate
20 h 20 apart on the timetable, overnight
U2 7837 leaves 20 h 20 after KL 1604 arrives on the timetable: more than half a day, so not a connection we count.