diff --git a/docs/research/2026-09-01-overhaul/s3-walk-ownership-map.md b/docs/research/2026-09-01-overhaul/s3-walk-ownership-map.md
index 96af78fc..a81ce0b5 100644
--- a/docs/research/2026-09-01-overhaul/s3-walk-ownership-map.md
+++ b/docs/research/2026-09-01-overhaul/s3-walk-ownership-map.md
@@ -408,16 +408,18 @@ edits the same driver).
   bisect" wording: the whole-stage terrain event is replaced in THIS chunk
   (drawing terrain twice would already hide the punch and make the gate
   meaningless), and chunk 4 loses that deletion.
-- **R5 — the sky draws TWICE.** `LScape::draw` @0x00506330 calls
-  `GameSky::Draw(sky, 0)` @0x0050633c BEFORE `draw_check_blocks`, walks the
-  blocks (`DrawBlock` @0x00506374), and then calls `GameSky::Draw(sky, 1)`
-  @0x00506396 AFTER every block. acdream emits one `Sky()` event at the
-  landscape turn's start. The implementer reads `GameSky::Draw` (grep it)
-  and reports what the second pass (`arg2 == 1`) draws; if it is a real
-  post-terrain layer (horizon band, celestial sprites, the far fog dome),
-  chunk 3 adds the second sky event after the last land cell; if it is
-  empty at retail defaults, the contract records why with the address. Do
-  not guess — read it.
+- **R5 — the sky draws TWICE, and the second pass is the WEATHER.**
+  `LScape::draw` @0x00506330 calls `GameSky::Draw(sky, 0)` @0x0050633c BEFORE
+  `draw_check_blocks`, walks the blocks (`DrawBlock` @0x00506374), then calls
+  `GameSky::Draw(sky, 1)` @0x00506396 AFTER every block. `GameSky::Draw`
+  @0x00506ff0's `arg2 == 1` is the weather pass, gated on
+  `SmartBox::is_player_outside` @0x00451e80 (already Ghidra-arbitrated and
+  modeled by `RetailPViewPassExecutor.DrawLandscapeSliceLate`'s `RenderWeather`
+  call — see that method's comment). Chunk 3 keeps the sky at the landscape
+  turn's start and places the weather pass AFTER the last land cell of the
+  turn (retail order); the implementer confirms where the late landscape
+  slice runs relative to the new per-cell events and moves the weather call
+  only if it currently runs before them.
 
 ### 9.2 Production behavior change