Originally Posted by
BackSlash3
Yes, you’re fine. Assuming that this is all one ticket, it’s the most significent carrier whose baggage policy applies. In this case it’s very clear that AC is the MSC.
Have a a good trip.
Are you sure?
IIRC, I remember a case where someone was told by another airline in an intra Europe connection that the AC baggage rules wouldn't apply, and that the Generous P25 luggage allowance on AC metal is only applicable if you check in with AC.
I think it might even say so in T&C?
Regardless, OP shouldn't expect a walk in the park at check in.