I made my hungry ghosts in a jar do a couple of detailed code walkthroughs which are captured in the link below.

trigger warning: text fully written by hungry ghosts, I only had them apply 100+ item checklists to make it hopefully more readable.

i suspect RH might have indeed covering the loopback case… or, just hedging in general - glass houses and all that…

Hope this helps.

https://ayourtch-llm.github.io/apchat-blog/posts/2026-11-02-...

P.s. I now realize having stared at the code a bit has put me into the “so what ?” mode, which evidently wasn’t compatible with the prevailing sentiment among folks that used only the advisories :-) sorry to all who I got upset.