GT- Vs G-

HI, I read the documentation and the forum, but I can’t understand a couple of things.

I have a GA4 property with a stream with id G-79P66*****. In Analytics website it gives the code to add GA4 manually to a website, and the code contains that id:

<script async src="https://www.googletagmanager.com/gtag/js?id=G-79P66*****"></script>
<script>
  window.dataLayer = window.dataLayer || [];
  function gtag(){dataLayer.push(arguments);}
  gtag('js', new Date());

  gtag('config', 'G-79P66*****');
</script>

I installed Google SiteKit plugin, I connected Analytics, I choose my GA4 property and stream, it shows my G-79P66***** and also a Google Tag Id GT-P******.

I did not connect Google Tag Manager because I don’t use it.

After installed SiteKit, in my webpage source I see that code generated uses Google Tag Id, not my stream id. Is it correct?

<!-- Snippet Google Analytics aggiunto da Site Kit -->
<script type='text/javascript' src='https://www.googletagmanager.com/gtag/js?id=GT-P******' id='google_gtagjs-js' async></script>
<script id="google_gtagjs-js-after" type="text/javascript">
window.dataLayer = window.dataLayer || [];function gtag(){dataLayer.push(arguments);}
gtag('set', 'linker', {"domains":["studiolegaleasmahi.it"]} );
gtag("js", new Date());
gtag("set", "developer_id.dZTNiMT", true);
gtag("config", "GT-P******");
</script>

<!-- Termina lo snippet Google Analytics aggiunto da Site Kit -->

Is it possible that playing around with Google Tag Manager I did something wrong?

I started to investigate because it seems that Google Analytics realtime section do not catch all (non logged-in) users…

Many thanks.

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