Thanks so much for all the info shared in this thread in regards to booking at the outer reaches of calendar availability.

Because of the married/divorced segment bug/issue described above, I was unable to book my complete one-way BKK-PDX itinerary when the AS availability window opened up. I could find each segment individually (both on BA and AS websites), but I couldn't book all segments married together as a single award redemption.

So I went ahead and booked the main HND-SFO trans-pacific segment as well as the connecting segment back to PDX, assuming that I could add BKK-HND within a few days after outside of the bug/issue window (which according to my testing is about 2 days).

It's only been 1 day but I just spoke with an agent (this is a Sunday at 10am) who told me that they CANNOT add a segment as described unless the ENTIRE end-to-end itinerary shows current availability. In other words, it doesn't matter than I'm already holding HND-SFO and SFO-PDX, she's saying there would need to be additional availability on those segments as well in order to book BKK-HND.

Does anybody know if this is true? It doesn't sound right. I'm guessing/hoping I just need another day or two to get out of the bug window...but still, what she told me was concerning. Any thoughts?

Thanks again for all the detailed info shared here.