onena,
The kit kat example was an exaggerated one for you to understand the innumerous possibilities of the Marketing world! The campaign can be the entire responsibility of Kit Kat with none or little involvement of the airline! Who knows?! The ordinary consumer wouldn’t know the details of a partnership like that!
On top of this, this is Qatar! You can’t expect companies or their employees to behave professionally.
I am surprised also for the fact that you have not noticed the difference after all these year here!