CA 1226 then 8L 9988 at Beijing
Xi'an → Beijing → Kunming
Timetable, Beijing time
21:15CA 1226 from Xi'an at the gate
20:158L 9988 to Kunming leaves the gate
23 h apart on the timetable, overnight
8L 9988 leaves 23 h after CA 1226 arrives on the timetable: more than half a day, so not a connection we count.