Hi I don't know if this question got asked before: my sister is flying from SEA to HKG through LAX. She has a VX ticket (bought via AS web site) SEA to LAX, and a CX ticket from LAX to HKG. Can she check her luggage through and no need to re-check in at LAX? She used to be able to do that when flying AS (SEA to HKG) even holding two separate tickets, but this is the first time she flies VX. Does VX has interline agreement with CX? She has a first class ticket on VX but I don't think it matters.

Thank you for your help in advance.

BW