I only need my Google Calendar(s) for work purposes.
Punching a hole in my Google account security via an app password is just not possible.
Delayed sync of up to 6 hours is possible.
Asking the other Calendar user to change some MINOR habits is possible.
Even one way FROM Google TO Nextcloud is possible.
Having to export .ics files manually is just too much hassle.
So:
How can I use a phone with both a Google account login and a Nextcloud account to sync CALENDARS?
edit: I notice that Google Calandar has a “Secret link” option but when I try to use this I get the message “Error creating calandar” I’ll need to find the log file to give you more info.