You’re welcome to dream up your own definitions, but then don’t patronize others: https://en.m.wikipedia.org/wiki/Advertising
"Advertising is a marketing communication..."
Your tone is unnecessary and off-target. The above quote from line one is exactly what I said.
You don't just wake up, roll out of bed, and advertise. Well, you can but waste a ton of money. In any case, that message needs to be crafted. That's marketing. Advertising is how you disseminate that "plan."
Logo - marketing, not advertising.
Style guide - marketing, not advertising.
Positioning of the brand - marketing, not advertising.
And so on.
Marketing is the plan. How you wish take and place your brand / product to market. Advertising is the communication of that to thd market. Advertising is what happens when the meeting ends and its time to engage the market.
Marketing = what we have to say and who we wish to say it to.
Advertising = Got it. Let's see what tools we have to best make that happen.
No dreams. That is how it happens.
Advertising is part of marketing.
Futhermore, of course marketers will say they control everything (i.e., including advertising). Now let's go ask an advertising agency if they agree. Let's go ask a promotions agency if they agree.
I'm speaking about the process and activities; devoid of typical biz structures and models that manifest those. It's a fool's errand to discuss the latter without first understanding the the basics, the foundation. The fact this thread is off target proves that point precisely.
It's simple. It's called Advertising for a reason. The outputs are called Advertisements for a reason. Whether that's within Marketing's "power grab" or not is not really relevant.