[exim-dev] Are bug system emails to exim-dev moderated or sl…

I have noticed that emails from the exim bug system to the exim-dev list
can take well over a day to arrive:

Received: from localhost ([127.0.0.1]:59430 helo=hummus.exim.org)
     by hummus.exim.org with esmtp (Exim 4.94.2-31-g503e55a2c)
     (envelope-from <exim-dev-bounces+exim=aitchison.me.uk@???>)
     id 1pbzJc-00074E-5o
     for exim@???; Tue, 14 Mar 2023 07:43:24 +0000
Authentication-Results: exim.org;
  iprev=pass (hh.schlittermann.de) smtp.remote-ip=213.128.132.49;
  spf=none smtp.mailfrom=bugs.exim.org;
  dkim=pass header.d=bugs.exim.org header.s=d202011 header.a=rsa-sha256;
  dmarc=none header.from=bugs.exim.org; arc=none
Received: from hh.schlittermann.de ([213.128.132.49]:60018)
  by hummus.exim.org with esmtps  (TLS1.3) tls TLS_AES_256_GCM_SHA384
  (Exim 4.94.2-31-g503e55a2c) (envelope-from <admin@???>)
  id 1pbPp9-0004TR-6F
  for exim-dev@???; Sun, 12 Mar 2023 17:49:36 +0000

Are these messages moderated, or is the delay purely something in hummus ?

-- 
Andrew C. Aitchison                      Kendal, UK
                    andrew@???