iOS Calendar Google invites to Inbox

I don't think this should be so hard. I have my Google calendar synced to iPhone but new invitations or updates do not show up in the Inbox area of the iOS Calendar app.

I have tried all sorts of workarounds but no luck. Fantastical 2 does not do it either. I even tried forwarding all calendar invites using a filter in Gmail to my iCloud account but it just shows up as an email in my iCloud email inbox. Not on the calendar app.

Any other ideas??