Sure, but why make the award booking class available for overselling as well two hours before departure and then not have the seat? Doesn't OLCI book into Z ?
Now 1-hour before flight and Expertflyer shows following availability:
J1 C1 D1 I1 Z1 O1 Y9 B9 M9 U9 K9 H9 L9 Q9 T9 E9 N9 R9 V9 G9 X9