After i replied to your post it appared magically.

Seams that the note has been posted on my inbox relay 😱 but it's impossible my relay accept just mention, reply and DM

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Errata corrige, you can post on my relay because you are in my wot.

Now i understand, your bot post the hidden note on replier inboxes 😁

This is all wrong. The bot only posts on wss://relay.westernbtc.com/. There is a relay hint on the quote. Also the bot pubkey has a 10002 in many relays indicating where it primarily publishes to.

Someone else must have published the quoted note to all possible relays under the sun after my note.

Is there such a thing: do not broadcast my note/event to any other relay flag?

Yes, NIP-70.

Did you use this for the event you posted?

Which apps or relays follow NIP-70?

Primal can't resolve the hint

If I write here will it appear for me too?

Nope, still nothing.