As you can read in the thread(s) you have to go to Asia to save YQ of $ 220.00 The cost of getting there (Asia ) vastly exceeds the $ 220.00 savings. Unless you actually live in Asia or Oceania it is not worth the effort to try to drop YQ on this one.
LIS-CCS R/T $ 467.00 is still a very very good fare in itself. If you actually need/want to go to CCS from Lisboa dont waste time screwing around with 1X or 3X, just book it - even with YQ - before it disappears.

I think only very very few ( if any ) of our FT friends will actually use a FDed LIS - CCS trip.

BCN - GRU/EZE at $ 491.00 is in my opinion much a more attractive deal ( not FDable)