انْقَطَعَ الطَّرِيقُ، فَاجْتَمَعَ أَهْلُ الْقَرْيَةِ.
The road was cut off, so the villagers gathered.
انْقَطَعَ الطَّرِيقُ، وَاجْتَمَعَ أَهْلُ الْقَرْيَةِ.
The road was cut off, and the villagers gathered.
The first formulation links the gathering to what followed the disruption and presents it as a related consequence. Wāw, by itself, joins two events without necessarily asserting succession or a causal result. One should not infer a rigid causal relation from fāʾ while ignoring the context.
Wāw in the discussion of faṣl and waṣl must not be conflated with the specific semantic effects of other coordinating particles.