Don't know if it's such a deal but I just managed to book tickets 6/23-7/8 on AA/BA.
Doesn't show up in a regular search but when I search ITA Matrix June 2020 14 nights and clicked on 6/23 it showed up. I used the Book With Matrix chrome plug in to book on AA.com but was unable to replicate the search on Priceline or aa.com