We don’t have real time sync between the two at the moment.
As Zapier has a circular dependency you could work around by
- Doing an hourly sync from Google Calendars to Coda using the Calendar pack and a button as detailed in this article - Pulling in data from Google Calendar
- Having a new table where you enter new events in Coda and a button that copies it over to your calendar only if the item does not exist is a duplicate and triggers Zapier to add it to GCal.
I know a little convoluted but doable till we get to it.