EC 7645 then FR 2766 at Madrid
Lisbon → Madrid → Prague
Timetable, Madrid time
17:25EC 7645 from Lisbon at the gate
17:20FR 2766 to Prague leaves the gate
23 h 55 apart on the timetable, overnight
FR 2766 leaves 23 h 55 after EC 7645 arrives on the timetable: more than half a day, so not a connection we count.