How do proponents of the dual nature of man address Hebrews 4:12, "dividing soul and spirit"?

Those holding to a tripartite nature of man, or trichotomism, [sometimes point to Hebrews 4:12](https://christianity.stackexchange.com/a/50368/21576) as evidence for their view that soul and spirit are distinct in man: > For the word of God is alive and active. Sharper than any double-edged sword, it penetrates even to dividing soul and spirit, joints and marrow; it judges the thoughts and attitudes of the heart. ([NIV](https://www.biblegateway.com/passage/?search=hebrews+4%3A12&version=NIV)) How do proponents of a dual nature of man (dichotomism), believing that the soul and spirit are two words referring to the same entity, understand this passage?