Chrony vs NTPsec vs NTP (ntpd)

I faintly remember that the reason why I was looking at the logs in the first place at the time I found holes in the CSV log was due to seeing and wanting to understand a “graph shrinkage” effect in connection with exceptional conditions with my chrony instance. Due to the issue with the holes, and since it was a rare occurrence only, I did not pursue the investigation.

So I hope that @someone has a more current example.