SK 4231 then SK 722 at Arlanda
Turku → Stockholm → Helsinki
Timetable, Stockholm time
06:10SK 4231 from Turku at the gate
18:20SK 722 to Helsinki leaves the gate
12 h 10 apart on the timetable
SK 722 leaves 12 h 10 after SK 4231 arrives on the timetable: more than half a day, so not a connection we count.