Has anyone been able to book CX seats right at the end of their availability (330 - 335 days out)? I just called and the agent couldn't find any availability on three routes, from two cities, all at that time period. I tried for 1 seat for one of the routes and couldn't find it. I told him to search at 1 AM and he was able to do it (read out the flight number which I confirmed on aa.com). I also searched for an intra-Asia flight around that time and he couldn't find any seats over 5 days. Searched for both business and economy tickets. All flights have availability for 2 pax on aa.com, for all dates, all flights.

Do I just need to try again later in the day?

Edit: I repeated the search for 4 people on aa.com, and while there were a few flights that were not available, I'm still seeing availability for the majority over multiple days in that time period.
Edit2: British Airways showing similar results to aa.com