Originally Posted by FlyerGoldII

Thank you, for your response.

I thought of another question, regarding the fare rules for AC, LX, or other airlines.

Let say I buy a ticket issued by AC. That means that at least one of the 2 transatlantic flights have to be designated as an AC flight on AC metal or codeshared on the other Star Alliance partners mentioned (TK is not one of them), or does it have to be both transatlantic flights (one in each direction) have to be designated by an AC flight number (ie AC metal or AC codeshared).