Faṣl (الفصل) means leaving two successive clauses without coordination, but the reasons differ. In complete disjunction there is no suitable intended partnership; in complete connection the later statement reinforces or clarifies the earlier one; in near-complete connection it answers an implied question.
RelationshipDiagnostic feature
DisjunctionNo suitable intended coordination
Complete connectionRepetition, confirmation, or clarification
ResumptionAn answer prompted by the previous clause
The next level takes up waṣl (الوصل) in detail: when wāw is rhetorically appropriate, what constitutes a shared relationship, and how intermediate cases are analysed.