I don't know if that is still the case, but you could book Thai Airways to Austria....and than you sit in an Austrian Airlines airplane. If you would have booked the same as Austrian Airlines flight it would have cost half.
If I am a Thai person...maybe not good in English and think...better Thai Airways....I get the food I know, I can speak my language and than you sit in an AUA airplane.
Maybe they mention it now, but a few years ago it was not mentioned.