diff --git a/.github/workflows/cluster-regression.yml b/.github/workflows/cluster-regression.yml
index be231e7..5e96692 100644
--- a/.github/workflows/cluster-regression.yml
+++ b/.github/workflows/cluster-regression.yml
@@ -27,7 +27,9 @@ on:
         type: boolean
         default: true
   schedule:
-    # GitHub only fires this on the default branch after merge.
+    # Daily Kind + Phase 2 + Newman on the default branch (cron does not run on PRs).
+    # Changing this workflow file on a PR runs the same Kind job; isolation-eval is
+    # skipped on pull_request and remains part of nightly / dispatch / tags.
     - cron: "17 6 * * *"
   push:
     tags:
diff --git a/.github/workflows/intercept-e2e.yml b/.github/workflows/intercept-e2e.yml
index 24db38c..ea8a2ac 100644
--- a/.github/workflows/intercept-e2e.yml
+++ b/.github/workflows/intercept-e2e.yml
@@ -32,7 +32,8 @@ on:
       - "scripts/run-product-intercept-e2e.sh"
   workflow_dispatch:
   schedule:
-    # Weekly product-path evidence on the default branch.
+    # Weekly product-path evidence on the default branch (Monday).
+    # Changing this workflow file on a PR runs the same telepresence + mirrord jobs as the cron.
     - cron: "43 7 * * 1"
 
 permissions:
diff --git a/.github/workflows/results-regression.yml b/.github/workflows/results-regression.yml
index 16b1dd7..f0db7f4 100644
--- a/.github/workflows/results-regression.yml
+++ b/.github/workflows/results-regression.yml
@@ -19,6 +19,7 @@ on:
   workflow_dispatch:
   schedule:
     # Weekly strict Results/Postgres evidence on the default branch.
+    # Changing this workflow file on a PR runs the same Kind + Results job as the cron.
     - cron: "19 9 * * 3"
 
 permissions: