A.2.6:7.2 - Serial Composition (Intersection)

Rule S‑INT (serial). For an essential dependency chain C1 → C2 → … → Ck that supports a claim/capability, the effective scope along that chain is:

Scope_serial = ⋂_{i=1..k} Scope(Ci)

If Scope_serial = ∅, the chain is inapplicable and MUST NOT contribute to published scope.

Monotonicity. Adding a new essential dependency can only narrow (or leave unchanged) the serial scope.