Shared Google Calendar not showing on Apple Calendar

A Google Calendar was shared with me, inviting me through my Google e-mail address. I can see it logging in to my Google Account using a browser or using Google Calendar

HOWEVER I cannot see this shared calendar in Apple Calendar. I see my personal Google calendar but not the one shared with me (priviledge: "see all details").

Not only I don't see the entries but also I don't see the shared calendar at all in the list of all calendars. I see my own Google calendar but not the one shared with me in the same account.

Syncronization option for that shared calendar is activated.

The same situation occurs in Apple Calendar in all my devices. iPhone, iPad and Mac

I tried to delete the Apple calendar APP and re-install it.

I tried to delete the Google account and re-add it.

Always same result

The calendar appears only if I am given privileges to "modify and share". In that case the calendar appears also in Apple calendar. But that is not acceptable for the calendar owner.

Can anybody help me? Is that a known problem?

Thanks