Ok so here I go. It seems I screwed things up as I started to accumulate miles in Lan and AA, but within their own FFP memerships. I used to be Gold on AA but now I only have 18K Miles on each program (AAdvantage and LANPASS). So yes, fool of me. Even flew 16K miles on Delta this year (aaargh).

I also have a Visa Platinum accumulating on AAdvantage, that I use on a daily basis but being based in Argentina I do not get a huge amount of miles there (say 500 miles per month). All my travel related expenses go via Amex Corp.

So, question is, should I stay on AA or LAN FFP? Can I do anything to consolidate at least from Lan to AA or vice versa? I can anticipate traveling a lot on LAN across latam, so it seems the choice should be Lanpass. But the longest travels are to US (I can easily travel 10K miles on one trip, but they are yearly) so there I use AA.

The key would be to know if I would accumulate 100% bonus miles once I get to Plat/Comodoro, when I fly on the other airline.

(1) What is your home airport? (SFO, SCL, London LHR, HKG, Singapore SIN etc.)
Reply: EZE (Buenos Aires, Argentina)

(2) How many miles do you usually fly each year & in what class? (<25K, 25k-50k, >50k)
Reply: > 50K around Latin America plus 1 or 2 trips to US. Coach (or upgrade if available).

(3) What types of fares do you usually buy ? ( First, Business, Economy etc.)
Reply: Economy

(4) Can you choose your airlines and/or, class of service?. Do you travel for work and/or pleasure?
Reply: Yes, normally I tend to use LAN and AA

(5) Which routes do you fly most often (US Domestic, Transpacific, Kangaroo, in Asia etc)
Reply: Latin America / US.

(6) Do you have FFP status of any kind of OW or other airline at present? What is it? (AA Executive Platinum, QF Gold, UA 1K, LAN Comodoro, etc)
Reply: Not yet, have 18K miles in AA and around 20,000km in LAN. Have 43K million miler on AA but expired.

(7) What is most important to you in a FFP? (upgrades on travel, priority services when flying the airline, extra baggage allowance, good award redemption rates, better award access, free - discounted lounge access, etc.)
Reply: Upgrades and Lounge Access.

(8) Preferred Airlines
Reply: LAN, AA