After a reboot and an attempt to restart Chia, I was only getting two lines in the log file:
1: Starting Chia Daemon
2: Not Implemented
The Wallet remained stuck on a "Connecting" message.
Turns out the Chia Daemon port 55400 had been blocked by the WINNAT service.
It was confirmed by running the following command from an elevated CMD prompt:
netsh interface ipv4 show excludedportrange protocol=tcp
The following commands also ran from the same elevated CMD prompt fixed it:
net stop winnat
[Now stat Chia]
net start winnat
Thanks to MrGreenApe and his post here: