Originally Posted by intuition

Not sure I know/understand that ticketing, but if you are able to check-in with a Cathay agent, they are able to check-through, as they have a different policy than Finnair. I've done it on occasions, but then again my first flight was KA/CX marketed and operated. I understand you hold a CX issued ticket (160 stock) on a AY marketed and AY operated flight, so while your contract is with CX it may very well be that they will check-in based on AY policy (ie no through check on separate tickets).