diff --git a/benchmarks/conformance/cases/90-zoomable-time-window/model.ts b/benchmarks/conformance/cases/90-zoomable-time-window/model.ts
index 0e539078..7c89dd80 100644
--- a/benchmarks/conformance/cases/90-zoomable-time-window/model.ts
+++ b/benchmarks/conformance/cases/90-zoomable-time-window/model.ts
@@ -44,6 +44,31 @@ export function visibleZoomData(rows: readonly AaplRow[], window: ZoomWindow) {
   })
 }
 
+export function visibleZoomDataWithNeighbors(
+  rows: readonly AaplRow[],
+  window: ZoomWindow,
+) {
+  const start = window.start.getTime()
+  const end = window.end.getTime()
+  let firstVisible = -1
+  let lastVisible = -1
+
+  for (let index = 0; index < rows.length; index += 1) {
+    const timestamp = rows[index]!.Date.getTime()
+    if (timestamp < start) continue
+    if (timestamp > end) break
+    if (firstVisible < 0) firstVisible = index
+    lastVisible = index
+  }
+
+  if (firstVisible < 0) return []
+
+  return rows.slice(
+    Math.max(0, firstVisible - 1),
+    Math.min(rows.length, lastVisible + 2),
+  )
+}
+
 export function zoomSpanDays(window: ZoomWindow) {
   return (window.end.getTime() - window.start.getTime()) / millisecondsPerDay
 }
diff --git a/benchmarks/conformance/cases/90-zoomable-time-window/view.tsx b/benchmarks/conformance/cases/90-zoomable-time-window/view.tsx
index d639e922..13826798 100644
--- a/benchmarks/conformance/cases/90-zoomable-time-window/view.tsx
+++ b/benchmarks/conformance/cases/90-zoomable-time-window/view.tsx
@@ -18,6 +18,7 @@ import {
   initialZoomWindow,
   selectZoomRows,
   visibleZoomData,
+  visibleZoomDataWithNeighbors,
   zoomDateFromAnchor,
   zoomDateKey,
   zoomFullDomain,
@@ -69,19 +70,20 @@ const ZoomableTimeWindowExample = forwardRef<
   })
   const [state, setState] = useState(stateRef.current)
   const [scene, setScene] = useState<ChartScene<AaplRow> | null>(null)
-  const rows = visibleZoomData(zoomRows, state.window)
+  const visibleRows = visibleZoomData(zoomRows, state.window)
+  const lineRows = visibleZoomDataWithNeighbors(zoomRows, state.window)
   const definition = useMemo(
     () =>
       defineChart(
         defineChart({
           marks: [
-            lineY(rows, {
+            lineY(lineRows, {
               x: 'Date',
               y: 'Close',
               stroke: color,
               strokeWidth: 2.5,
             }),
-            dot(rows, {
+            dot(visibleRows, {
               x: 'Date',
               y: 'Close',
               fill: color,
@@ -109,6 +111,7 @@ const ZoomableTimeWindowExample = forwardRef<
             grid: true,
             axis: { ticks: { count: 4 }, label: 'AAPL close ($)' },
           },
+          clip: true,
           margin: { top: 56, right: 24, bottom: 44, left: 58 },
         }),
         { animate: false, keyboard: false, focus: focusDisabled },