I've got two calendars that I'm trying to synchronize: Google Calendar on GSuite (main) and Exchange-based with access through EWS (secondary). To make it a bit easier I only need one-way synchronization (secondary to main).
For now I've configured GSuite Calendar Interop option and I can view free/busy status for my secondary calendar (while adding events) but still can't subscribe to it (can't add it to "my calendars" section). The interesting part here is that I can do that via mobile application so hopefully it's also possible via website.
Anyone got any ideas?