The fact is this: AT&T does not have the ability to know exactly when you leave the office. The infrastructure needed to track that at scale does not exist within the company and likely never will.
Officers all know this. Stankey knows it. HR knows it.
The best the developers can do is combine a hodge podge of semi-reliable data points that create a directional estimate and publish it on PBI.
I personally know some of the individuals who built and maintain the report. They will be the first to tell you about all of its limitations. They will also be the first to tell you what an incredible sink of time and resources the tracking of management hours has become across the enterprise.
At the end of the day it's all being driven by one person and one person, alone. Stankey is always convinced he's the smartest guy in the room and nobody can convince him that his RTO decisions are anything short of genius.