diff --git a/scripts/src/hwlab-node-web-observe-runner-source.ts b/scripts/src/hwlab-node-web-observe-runner-source.ts
index 7793713f..82cf01a0 100644
--- a/scripts/src/hwlab-node-web-observe-runner-source.ts
+++ b/scripts/src/hwlab-node-web-observe-runner-source.ts
@@ -2119,12 +2119,16 @@ const sourceSamples = await readJsonl(dataFile("samples.jsonl"), { compact: comp
 const relatedJsonlTailLimit = analyzeTailSamples > 0 ? Math.max(1200, analyzeTailSamples * 50) : 0;
 const smallJsonlTailLimit = analyzeTailSamples > 0 ? Math.max(500, analyzeTailSamples * 8) : 0;
 const sourceSampleWindow = sampleTimeWindow(sourceSamples, 60_000);
-const sourceControl = filterRowsByTimeWindow(await readJsonl(dataFile("control.jsonl"), { tail: relatedJsonlTailLimit }), sourceSampleWindow);
-const analysisFocus = analysisFocusFromControl(sourceControl);
+const sourceControlAll = await readJsonl(dataFile("control.jsonl"), { tail: relatedJsonlTailLimit });
+const analysisFocus = analysisFocusFromControl(sourceControlAll);
+const sourceControl = filterRowsByTimeWindow(sourceControlAll, sourceSampleWindow);
 const samples = applyAnalysisFocus(sourceSamples, analysisFocus);
 const sampleWindow = sampleTimeWindow(samples, 60_000);
-const control = applyAnalysisFocus(filterRowsByTimeWindow(sourceControl, sampleWindow), analysisFocus, 1000);
-const network = applyAnalysisFocus(filterRowsByTimeWindow(await readJsonl(dataFile("network.jsonl"), { tail: relatedJsonlTailLimit }), sampleWindow), analysisFocus);
+const controlWindow = analysisControlWindow(sampleWindow, analysisFocus, 1000);
+const control = applyAnalysisFocus(filterRowsByTimeWindow(sourceControlAll, controlWindow), analysisFocus, 1000);
+const sourceNetworkAll = await readJsonl(dataFile("network.jsonl"), { tail: relatedJsonlTailLimit });
+const network = applyAnalysisFocus(filterRowsByTimeWindow(sourceNetworkAll, sampleWindow), analysisFocus);
+const promptNetworkRows = applyAnalysisFocus(filterRowsByTimeWindow(sourceNetworkAll, controlWindow), analysisFocus);
 const consoleEvents = applyAnalysisFocus(filterRowsByTimeWindow(await readJsonl(dataFile("console.jsonl"), { tail: smallJsonlTailLimit }), sampleWindow), analysisFocus);
 const errors = applyAnalysisFocus(filterRowsByTimeWindow(await readJsonl(dataFile("errors.jsonl"), { tail: smallJsonlTailLimit }), sampleWindow), analysisFocus);
 const artifacts = applyAnalysisFocus(filterRowsByTimeWindow(await readJsonl(dataFile("artifacts.jsonl"), { tail: smallJsonlTailLimit }), sampleWindow), analysisFocus);
@@ -2136,7 +2140,7 @@ const transitions = buildTransitions(samples);
 const sampleMetrics = buildSampleMetrics(samples, control);
 const pageProvenance = buildPageProvenanceReport(samples, control, manifest);
 const pagePerformance = buildPagePerformanceReport(samples, manifest);
-const promptNetwork = buildPromptNetworkReport(control, network);
+const promptNetwork = buildPromptNetworkReport(control, promptNetworkRows);
 const runtimeAlerts = buildRuntimeAlerts(samples, control, network, consoleEvents, errors);
 const runnerErrors = errors.slice(-8).map((item) => {
   const attempts = Array.isArray(item.error?.attempts) ? item.error.attempts : [];
@@ -2188,7 +2192,7 @@ const report = {
   command: "web-probe-observe analyze",
   generatedAt: new Date().toISOString(),
   stateDir,
-  jsonlScope: { mode: archivePrefix ? "archive" : "current", archivePrefix: archivePrefix || null, dataDir, analyzeTailSamples, sourceSampleCount: sourceSamples.length, effectiveSampleCount: samples.length, sampleWindow, focus: analysisFocus, valuesRedacted: true },
+  jsonlScope: { mode: archivePrefix ? "archive" : "current", archivePrefix: archivePrefix || null, dataDir, analyzeTailSamples, sourceSampleCount: sourceSamples.length, effectiveSampleCount: samples.length, sourceControlCount: sourceControlAll.length, sampleWindow, focus: analysisFocus, valuesRedacted: true },
   alertThresholds,
   manifest: compactManifest(manifest),
   heartbeat: compactHeartbeat(heartbeat),
@@ -2631,6 +2635,17 @@ function applyAnalysisFocus(rows, focus, graceMs = 0) {
   });
 }
 
+function analysisControlWindow(sampleWindow, focus, graceMs = 0) {
+  if (!sampleWindow || !Number.isFinite(sampleWindow.endMs)) return sampleWindow;
+  if (!focus || !Number.isFinite(focus.startMs)) return sampleWindow;
+  const startMs = Math.max(0, Math.min(Number(sampleWindow.startMs ?? focus.startMs), focus.startMs - Math.max(0, Number(graceMs) || 0)));
+  return {
+    ...sampleWindow,
+    startMs,
+    startAt: new Date(startMs).toISOString()
+  };
+}
+
 function compactSampleForAnalysis(sample) {
   if (!sample || typeof sample !== "object") return sample;
   return {