config not being called when gtag insertion is disabled

According to this article: https://support.google.com/google-ads/answer/6095821?co=ADWORDS.IsAWNCustomer%3Dtrue&oco=1n

It seems even if gtag.js has already been inserted the config function should still be called for it to work.

I installed the global site tag on my website from another Google product (example: Google Analytics) or from another Google Ads account: If this option applies to you, you won’t need to add the global site tag to your website again; however, for conversion tracking to work for this account, you’ll need to add the config command (the piece of code that contains your conversion ID) to every instance of the global site tag.