Char Jackson wrote:

Post #1 (at Giganews):

From: BillH
Subject: Folder Account add-on for TB 68.x
To:
Message-ID:

Post #2 (also at Giganews):

Subject: Provider for Google Calendar using OAUTH
From: Wayne
To:
Message-ID:

Both those posts were submitted to Mozilla's e-mail server which copies
via their NNTP-to-email gateway to their NNTP server (hosted at
Giganews). Those are not the same post peered to 2 different NNTP
servers, but 2 different posts and at the same NNTP server.

To prove peering, you would need to show the headers for the SAME post
(same Subject, same sender, and especially the same Message-ID) at 2
different NNTP servers. To show peering outside of Mozilla's Giganews-
hosted server, you'd have to show the same post at a different server.