Moving On With The Psychotechnic History

In Poul Anderson's Psychotechnic History, "The Snows of Ganymede," which we have just dissected, is preceded by "The Troublemakers" and succeeded by "Brake." Both these stories have already been discussed at some length on this blog. "Brake" is the last of what I call the four "political" stories in the Solar Union period of the Technic History:

in "Holmgang," Humanists plot;

in "Cold Victory," Humanists are overthrown;

in "The Snows of Ganymede," overthrown but plotting psychotechnicians are thwarted;

in "Brake," Western Reformists plot.

Unsurprisingly, all the plots and overthrows are followed by the Second Dark Ages, during which no stories are set. When technological civilization is restored, the hyperdrive is invented and we might as well be in a different history. I will reread the first two faster-than-light interstellar stories, "Gypsy" and "Star Ship," to check whether and, if so, how they refer back to the UN and Solar Union periods which are now like totally history. According to the Chronology, these two stories precede the founding of the Stellar Union and its Coordination Service.

This is a future history series of well-intentioned organizations. The Order of Planetary Engineers was led by a Coordinator. Does this imply any continuity between the Order and the Coordination Service?