The commentary reports a technical disagreement concerning taḍammun: must the speaker specifically intend a component for a word assigned to a compound meaning to signify that component?
One aspect is the hearer's comprehension of a component; another is the speaker's specific intention. Classical discussions do not always give these the same status.
For this level, the essential distinction remains whole meaning, component meaning, and external necessary concomitant. The role of intention is a further refinement, not a replacement for that distinction.