diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 49a7b5594..5c3e0553c 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -174,71 +174,6 @@ jobs:
           name: ${{ matrix.desktop-artifact-name }}
           path: ${{ matrix.desktop-artifact-path }}
 
-  # Cross-stack interop tests (T16). Builds the Rust hang-listen +
-  # hang-publish sidecars (nestsClient/tests/hang-interop/), `cargo install`s
-  # moq-relay + moq-token-cli at the version pinned in
-  # `nestsClient/tests/hang-interop/REV`, then runs `:nestsClient:jvmTest
-  # -DnestsHangInterop=true`. See
-  # `nestsClient/plans/2026-05-06-cross-stack-interop-test.md`.
-  #
-  # Linux-only: the cargo install of `moq-relay` 0.10.x has nontrivial
-  # native deps (aws-lc-sys, ring) that take 5+ min cold; we cache
-  # both ~/.cargo and the nestsClient/tests/hang-interop/target tree so the warm
-  # path is a few seconds. macOS / Windows runs would double the
-  # matrix cost without catching anything Linux doesn't catch — the
-  # protocol logic is platform-agnostic and the JNA libopus natives
-  # are already exercised by the unit-level JvmOpusRoundTripTest on
-  # the Android job.
-  hang-interop:
-    needs: lint
-    runs-on: ubuntu-latest
-    timeout-minutes: 30
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v6
-
-      - name: Set up JDK 21
-        uses: actions/setup-java@v5
-        with:
-          distribution: 'zulu'
-          java-version: 21
-
-      - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v4
-        with:
-          cache-read-only: ${{ github.ref != 'refs/heads/main' }}
-
-      # Pin Rust to ≥ 1.95 — moq-relay 0.10.25's transitive dep
-      # `constant_time_eq 0.4.3` requires it, and ubuntu-latest's
-      # default Rust version drifts.
-      - name: Set up Rust
-        uses: dtolnay/rust-toolchain@stable
-
-      # Cache cargo registry + the sidecar workspace's target/.
-      # First cold run takes ~6 min for the moq-relay install;
-      # cached runs ~30 s.
-      - name: Cache cargo
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/.cargo/registry
-            ~/.cargo/git
-            nestsClient/tests/hang-interop/target
-            ~/.cache/amethyst-nests-interop/hang-interop-cargo
-          key: ${{ runner.os }}-cargo-${{ hashFiles('nestsClient/tests/hang-interop/Cargo.lock', 'nestsClient/tests/hang-interop/REV') }}
-          restore-keys: |
-            ${{ runner.os }}-cargo-
-
-      - name: Run cross-stack interop suite
-        run: ./gradlew :nestsClient:jvmTest -DnestsHangInterop=true
-
-      - name: Upload interop test report
-        uses: actions/upload-artifact@v7
-        if: failure()
-        with:
-          name: Hang Interop Test Reports
-          path: nestsClient/build/reports/tests/jvmTest/
-
   test-and-build-android:
     needs: lint
     runs-on: ubuntu-latest
diff --git a/nestsClient/plans/2026-05-06-cross-stack-interop-test-results.md b/nestsClient/plans/2026-05-06-cross-stack-interop-test-results.md
index 65eb63500..75c677ed8 100644
--- a/nestsClient/plans/2026-05-06-cross-stack-interop-test-results.md
+++ b/nestsClient/plans/2026-05-06-cross-stack-interop-test-results.md
@@ -2,8 +2,9 @@
 
 **Status:** Phases 1–3 (and Phase 2.E follow-ups) landed. Phase 4 (browser
 harness) and Phase 5 (browser-only scenarios) are running in parallel
-agent branches; not yet merged. CI gating (the `hang-interop` job in
-`.github/workflows/build.yml`) is live and Linux-only.
+agent branches; not yet merged. **CI gating intentionally NOT wired** —
+the suite runs locally only via `-DnestsHangInterop=true`. See the
+"CI integration" section below.
 
 **Scenario inventory (committed in this branch + sister branches):**
 
@@ -422,18 +423,22 @@ relay-side timing under load.
 
 ## CI integration
 
-`.github/workflows/build.yml` now has a `hang-interop` job:
+**Not wired.** Intentionally kept out of `.github/workflows/build.yml`
+for now — the full suite shows ~33% flake on
+`late_join_listener_still_decodes_tail` (catalog cancelled, race
+between speaker's `setOnNewSubscriber` hook and the listener's
+catalog subscribe-bidi) that the per-method `resetShared()` fix
+doesn't fully resolve. Wiring CI on a flaky suite would burn
+maintainer time on false reds.
 
-- Linux-only (Rust toolchain + libopus available out of the box)
-- Caches `~/.cargo` and `~/.cache/amethyst-nests-interop/` between
-  runs so `cargo install moq-relay` and the workspace `cargo build`
-  are warm on the second run
-- Runs `:nestsClient:jvmTest -DnestsHangInterop=true`
-- Depends on the existing `lint` job (only runs after spotless +
-  ktlint pass)
+The suite runs locally via `-DnestsHangInterop=true` and is
+documented as the regression bar for any future MoQ wire-format
+or moq-lite session-cycle changes. Re-evaluate CI gating after the
+late-join flake's root cause lands.
 
-Browser interop will land its own job once `feat/nests-browser-interop`
-merges; that job adds `bun install` + Playwright Chromium caching.
+Browser interop (`feat/nests-browser-interop`) follows the same
+"locally only via `-DnestsBrowserInterop=true`" rule pending its own
+flake assessment.
 
 ## Pending follow-ups