OK, now you've piqued my interest. Sounds like you know what you're talking about.
Here's the deal. I don't develop sites anymore, haven't in a decade. But, I still understand what's going on with respect to code, though not like I once did. I am, in fact, an SEO strategist and site optimizer.
I've got a situation where I can't integrate Console into Analytics. I have an analytics account set up. And, I have a console account setup. But, I need to add one little snippet of code into the head of the core theme html page to integrate Console into Analytics.
The head of the development team is really anxious about letting anyone have access to SiteGround outside his department and I don't blame him. But, I have to do my job and part of that means tracking individual pages and that requires integrating Console into Analytics.
I don't want to go whining to the CEO and chuck anyone under the bus. That's a bad start to a new job.
I just want to add one little snippet of code to the head of the core theme .html page. How do I do that without a child theme and without access to Appearance > Theme Editor?