Sorry to resurrect this thread from a couple of months ago, but this is kind of related. I have two people on a PNR. Forgot to set an alarm to check in, so I did OLCI about 6 hours after T-24. Put in the PNR and my first and last name, then got to the screen where you select the passengers. I checked the box for both pax.

Here's the bizarre thing: my boarding passes from OLCI show that I got A21 while my companion only got B41! That seems really bizarre to me. I'm not A-list or anything. And obviously we checked in simultaneously! How could this happen?