Elsewhere (in some other FT thread) I've recently seen it estimated that it may be now several years before TAM is really integrated, and that it may take about that long for TAM to change alliances (assuming it's going to), and thus it could some time (measured in years) when LAN will be in OW yet co-owned TAM will be in *A.

So, yes, the good news is that LAN is staying in OW for quite some time to come. The bad news is that the final verdict may now be years off, and that may be too long to consider in terminal moves. So while the terminal move does seem to say LAN will certaily stay in OW for the next few years, I don't know if it signals anything far past that. (Of course, AA itself could possibly change radically far before then!)