One last question -----
Do you know whether the reverse would have worked any better? That is, if you were checking in with AY at HEL, would they be able to tag bags through to LAN destinations via JFK, and be able to issue you boarding passes that you would have been able to use to get through TSA security at T-4 (after transferring from T-8)? In other words, is there a workaround that we should be requesting at check-in? Thanks!