great feature. just ran into some irrops/flat tire on US, and while the GA was punching away finding me a direct flight with 2 stops , i was on EF trying to find suitable routes, lucked out finding a good DCA connection with 5!!!! X seats on both flights -> instaconfirm.

rare to see a lot of X inventory <24 hrs out (or even F/A inventory specifically on US, AA usually holds seats til the gate while US seems to UG til full), but good to have the option to see.