CA 870 then 8L 9988 at Beijing
Irkutsk → Beijing → Kunming
Timetable, Beijing time
21:00CA 870 from Irkutsk at the gate
20:158L 9988 to Kunming leaves the gate
23 h 15 apart on the timetable, overnight
8L 9988 leaves 23 h 15 after CA 870 arrives on the timetable: more than half a day, so not a connection we count.