Like the 13th Doctor said, it's nonlinear. More like a ball of wibbly wobbly timey wimey stuff.
An easy way to describe it would be as a dot, where perception is that which creates seemingly linear constructs. That said, I know an individual who created an egregore in the 2000s, and found that egregore in Mesopotamian mythology.
I myself have done something similar, in that I had soul traveled into the past to protect a friend while she was a baby from various spiritual attacks, and constructed a guardian angel egregore.
Not only did she draw that egregore, as her childhood imaginary friend, down to every detail recently, as she likes to draw things, but just today I learned that her head was once nearly sliced by an axe, she had escaped from a burning car, and survived eating glass shards as baby.
Time is relative, and flexible on other planes, so to someone who inhabits both it is a dot. Not a loop, nor a line. Every moment, is in the now, and it is perception that keeps us grounded into the present.
Wibbly wobbly timey wimey.