FR 2972 then FR 306 at Dublin
Kaunas → Dublin → London Gatwick
Timetable, Dublin time
23:10FR 2972 from Kaunas at the gate
14:45FR 306 to London Gatwick leaves the gate
15 h 35 apart on the timetable, overnight
FR 306 leaves 15 h 35 after FR 2972 arrives on the timetable: more than half a day, so not a connection we count.