8K 803 then BR 62 at Bangkok
Phnom Penh → Bangkok → Taipei
Timetable, Bangkok time
20:188K 803 from Phnom Penh at the gate
08:25BR 62 to Taipei leaves the gate
12 h 07 apart on the timetable, overnight
BR 62 leaves 12 h 07 after 8K 803 arrives on the timetable: more than half a day, so not a connection we count.