CX DM (and other OWEs) get a free drink and snack whilst flying AA Y

My OWE on CX has almost always been exceptionally good. Personal greeting from the ISM and always a "thank for you flying with us again". I was curious and asked them how they knew I was a returning pax and they told me the iPad has all my info. Not too sure how CX tracks my flying with them since I only use my AA EXP number (do they track OAL FFP too?).