He had a primly pointed jaw, a primly straight nose, and a prim manner of speaking that was so correct, so gentlemanly, that he seemed a comic antique.

请教老师此句的分析。句中that was so correct, so gentlemanly 是定语从句，它的先行项是a prim manner of speaking，说明此人说话方式一本正经，字斟酌句，彬彬有礼。that he seemed a comic antique 是结果状语从句。但是我认为此句的结果状语从句不是so correct, so gentlemanly , that he seemed… (so+adj+ that从句)，因为不仅仅是古板的说法方式让他看上去像滑稽的老古董，而是整句话的内容，他古板的尖下巴，古板笔直的鼻子以及古板的说法方式，是这个整体让他成了a comic antique. 除此之外，最后一个that he seemed …之前有逗号，因此也能证明最后半句话和前面的so correct, so gentlemanly 是两部分。

您认为呢，谢谢专家老师。