I have a question. Recently I was in Istanbul and holding a single ticket from Istanbul to Boston, using BA to Heathrow and AA trans-Atlantic. Two days before the flight, I asked my hotel concierge to reconfirm the flights for me. Although this was not a code-share, I assumed that the oneworld "everything is seamless" concept would apply.

Wrong. The concierge called BA in Istanbul and they were able to reconfirm the BA segment but said they couldn't reconfirm the AA flight. Isn't this very basic function something that BA could/should have done? If the oneworld alliance can't solve problems like this, what's the use?