hey, that's a great find! I'm interested in the answer as well.
CMB-ICN portion might work like this?
Singapore Airlines
SQ 469 Bandaranayike int'l (CMB), Colombo, Sri Lanka 01:45
Changi (SIN), Singapore, Singapore
Terminal 2 07:40
Non-stop
772 11h35min Daily
Asiana Airlines
OZSQ 6788 OP Changi (SIN), Singapore, Singapore
Terminal 2 09:05
Incheon Intl (ICN), Seoul, Korea Republic Of 16:20
Non-stop
772