A routine approval enters the workflow. On the baseline it takes 5 days. Nothing looks wrong yet.
Comments cycle twice. The activity finishes 9 days late — captured and timestamped the day it happens.
Procurement is logically tied to the approval. It can't begin until the design is signed off, so the 9-day slip flows straight downstream.
The procurement chain was near-critical. With its buffer gone, it becomes the longest path — now every day of slip moves the finish 1:1.
The slip is flagged at +9 days — not at the result. OPTEAM recomputes the critical path on the update, attributes the delay to the owner, and drafts the notice-of-delay before the cascade reaches the finish date.
Connect your P6 file and let OPTEAM flag drift the moment it happens.