Originally Posted by
MNSWEEps
... I understand it correct, the baggage rules of the first leg gets applied and I should get free first check in bag on LX metal on my return leg, right?
Yes, and No.
Yes the ticket fare rules for bags for the first marketed segment apply to the return.
No, card credit or elite benefits are not part of that rule and can be different in each direction (and depend on the flight operator).