瑜伽師地論略纂 4.91

4.91

「受唯捨受，兼苦樂」者，一業通招總別果故，亦依一期所有受說。不爾，唯應說捨受支，總報主故。

Regarding "feeling is solely neutral feeling, concurrently with suffering and pleasure": because a single karma comprehensively brings about both general and particular fruits, it is also spoken of in terms of all feelings within a single lifetime. Otherwise, it should only speak of the neutral feeling link, because it is the master of the overall retribution.