I tried by politely asking and showing my OW Emerald Card. The lounge entry attendant responded politely as well and said LATAM's contract only allows for the business class side of the lounge.

We spent a little time in this OW lounge, and then moved on to the Centurion Lounge. I have been in both before and honestly think neither are worth the time. I used to use the Star Alliance lounge in TBIT all of the time and really miss it. Buffet items at the OW lounge were fine for a very light breakfast, and a coffee, but that was it. The nice part of this lounge was that it was empty. The Centurion Lounge was, as you would probably not be surprised by, as busy as ever. Filled with families and a 30-40 minute wait to get in. Had to walk around for a few minutes before we even found two seats together. Quickly determined that a walk around TBIT was the better option, especially before an 8+ hour flight to South America.

On the return, we used the DL SkyClub, and with a long 5+ hour layover, THIS was my new favorite lounge at LAX. Ill skip TBIT lounges in the future.