EW 2460 then AI 130 at Heathrow
Stuttgart → London → Mumbai
Timetable, London time
08:00EW 2460 from Stuttgart at the gate
20:30AI 130 to Mumbai leaves the gate
12 h 30 apart on the timetable
AI 130 leaves 12 h 30 after EW 2460 arrives on the timetable: more than half a day, so not a connection we count.