In fact at the far right the graph shows the distance decreasing rapidly towards zero. A slight divergence develops, but soon the two paths are virtually indistinguishable. The speed vs time graph look virtually identical, and the same comments apply. At some point the orbits become radically different. In fact, the two orbits terminate at different stars.
Recursive functions are non-linear.
The Clockwork Universe is BS Disturbing stuff. In Part 3 we examine a simple representative recursive function in some detail.