I do not think the opening sample’s connection to Deep Time is coincidental. As a geologist by trade, the concept of Deep Time is part of my everyday intellectual landscape. Put simply, it refers to spans of time so vast that they lie beyond human comprehension.
While we can intuitively grasp the difference between days, months, or even a lifetime, we are fundamentally incapable of feeling how much longer two million years is than one million years. Rationally, we know that one is twice as long as the other, but we cannot truly comprehend the magnitude involved. The same limitation applies to the scales of atoms and galaxies: we understand them intellectually, but not intuitively.
To bridge this gap, we rely on analogies. For example, if Earth’s 4.6-billion-year history were compressed into a single 24-hour day, modern humans would appear only a few seconds before midnight. Such comparisons allow us to approach concepts that otherwise exceed the limits of human cognition.
For this reason, geologists do not measure Deep Time in seconds, minutes, or hours. Instead, we use units such as millions and billions of years (Ma and Ga), and divide Earth’s history into epochs, periods, eras, and eons. Eons—the largest divisions of geological time—span hundreds of millions to billions of years. Earth’s history is divided into four of them: the Hadean, Archean, Proterozoic, and Phanerozoic, tracing the story of our planet from its formation to the rise of complex life.
Aleister Crowley’s concept of Aeons is, of course, something entirely different. Yet when these two concepts are brought together, the opening sample becomes extraordinarily powerful. It evokes a transformation occurring on scales of time and change that lie beyond all human spatial and temporal comprehension. At that point, reason itself departs.
Added note; from geological perspective, BoC music output is a fairly rapid process

.