Here is an idea on what happens when to the present moment when one observer maintains a greater velocity than another observer.
The span of the present moment increases proportionally to an increase in velocity. This proportional increase is insignificant until speeds become substantial as a percentage of the speed of light. At the speed of light, the span of the present moment “stretches” to become infinite.
Essentially, at the speed of light, an object is everywhere along its path. However, from the perspective of a slower or static observer, the object is only at a focal point along the path based on the static observes frame of reference.
So while an object at the speed of light has already arrived within its frame of reference, the static observer can not see it yet. The focal point of the object at the speed of light of the static observer lags behind and not until the focal point intersects with the static observer’s present moment span does the object at the speed of light come into existence or view. Essentially the present moments of the traveler and the static observer intersect at the focal point of the slower/static observer.
I will strive to make the concept in my mind clearer.