> The ephemeral "brand awareness" provided by most advertising takes more than a few days to fall off.
Marketing metrics in general move slowly: think weeks, months, or even longer for significant moves. A lot of short term moves are noise generated by imperfections in sampling, particularly with daily collection. This applies regardless of the metric: awareness, consideration, affinity, penetration.
I don't know what she means specifically by "performance metrics", but it would be a pretty poor showing for the CMO of a global company to expect significant moves in any marketing metric over the span of a few days. I'm therefore guessing she means something else - like impressions, clickthroughs, or sign-ups - and that the article is simply of poor quality.
I'm straying off topic here, but generally the only time marketing metrics make significant moves over a short period of time is if something major happens that hits the news or goes viral. Even here it may only be changes in media metrics, such as buzz, that aren't reflected by changes in more substantive areas.
E.g., I can see a gigantic spike in negative buzz for KFC in the UK in late February 2018 because they ran out of chicken nationwide (I kid you not). I can also tell you that whilst over the next several months their penetration dropped by a few percent (significant at the levels we sample), no long term harm appears to have been done to their business: penetration quickly returned to its pre-crisis levels.
The reason nothing has changed could at this stage be attributed to the fact that it's too early, or simply that nobody cares Chase has stopped advertising: they're so ubiquitous it doesn't matter.
And if you're still looking for more reasons why this isn't news, this might be the killer: it's pretty well understood that you're going to get a different response to online advertising depending on where you place it. Some sites simply give you more return than others on your advertising investment, and the differences can be stark. I'd bet Chase has limited their ads to the 5000 sites that give them the best ROI so, again, no surprise that nothing has changed.