AA 78 then BA 416 at Heathrow
Dallas-Fort Worth → London → Tenerife South
Timetable, London time
12:10AA 78 from Dallas-Fort Worth at the gate
12:05BA 416 to Tenerife South leaves the gate
23 h 55 apart on the timetable, overnight
BA 416 leaves 23 h 55 after AA 78 arrives on the timetable: more than half a day, so not a connection we count.