Procter & Gamble loses in Ex parte Glenn
The Board cited In re Peterson on overlapping ranges. 315 F.3d at 1329. And, yes, In re Best, 562 F.2d at 1255, was cited.
As to KSR, the Board noted that if the claimed composition is suggested for other reasons, a particular property of the composition carries no patentable weight. [see page 7 of the Board decision.]