Except that, as I’ve already mentioned, I have two piholes, and sometimes both will be receiving requests. Based on your description, the second would never receive requests as long as the first is online. Perhaps this is router dependent, but it’s what I’ve observed.
Huh, I’ll definitely look into that. Both times I tried to route external pihole access, somehow other mystery services found it and it slowed to a crawl from getting absolutely pounded by requests not from me. Thanks for that tip!