Originally Posted by
Lux Flyer
seems that it would be a pretty rare scenario that they have T-class availability but no X or XN
I would not expect to see correspondence between T and XN. You have to go down lower in the table - L or K.
Originally Posted by
Lux Flyer
Though perhaps when they level the inventory near departure (do they still do this?)
No they do not. That ended years ago.