diff --git a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
index 9c3018fd..1b55e266 100644
--- a/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
+++ b/03-DESIGN/01-to-be/47-milestones/G-20-lead-answers.md
@@ -275,3 +275,8 @@ names the principle that settles it, and is cited as "design 47 G A-n".
 - **A-70** (§572, A-45; the rule that a process answers no call) The builder's tools bundle serves `reserved` and
   `builder_versions`, following the catalog half's view itself as other bundles follow views; the builder's process
   serves no call.
+- **A-71** (§672, A-55, ADR 0348 §5; principle 7) A process has no settings read, so the builder's
+  `toolchain-wait-minutes` is placed where config fills a process's settings: a file the manifest declares, its content
+  `${config:toolchain-wait-minutes}`, read by the builder at its start; never its environment.
+- **A-72** (A-56; principle 5) The build modules hold mesh packages as the check does: mesh-build-node's lock problem
+  and its own install count no `@novox/mesh-*` package as one beyond the SDK.