Thanks Guys, I will submit a support request to technical support soon.
FLOOD to answer your questions:
1) Licensed 19.0.0.294b.c.d
2) iMac Retina 5k 27-inch, late 2015. Mojave version 10.14.6
3) Communication to Canon is via Wi-Fi
4) No reports logged related to this event
5) N/A
6) KIS not installed - this is a work laptop with an IBM configuration (I work for IBM). The iMac is my personal computer.
6a) as above - no KIS at all, not installed
6b) MacBook Pro (Retina, Mid 2015). Mojave 10.14.6
6c) via Wi-Fi
Many thanks!