In John Mueller’s hangout, one webmaster was concerned about an issue they were having with Google Analytics 4 connecting properly to their third-party analytics software—specifically, Teradata software.
They had already tried everything, including adding the HTML tag and all other troubleshooting steps.
They were not able to get GA 4 to integrate with their third-party software.
John’s suggestion was to post in the Google Search Console Help Forums. While Google staff does hang out there, experts with quasi-expert knowledge about the product are there too.
If it’s a technical issue on Google’s side, it can likely be escalated, if necessary.
This discussion occurs at the 00:34 mark in the video.