Originally Posted by christep

The Cantonese-speaking captain could well be Cantonese. Cathay already has a a number of local captains. What's more it isn't always the captain who makes the announcements (particularly the ToD one) and there are many Cantonese first officers. However, it does seem that part of the CX selection/training process is to ensure that their "local recruits" have a near-perfect English or American accent, so unless you have a look through the window or pay really close attention you still think you're being flown by a gweilo!

But, yes, I have also heard gweilo captains do the announcements in Thai, and (on a different occasion) in French.