I have 2 calendars - Office 365 and Google. I use Office 365 for work and Google for personal.
I have successfully published the Office 365 calendar to my Google calendar using the answer found here: https://webapps.stackexchange.com/a/89475/145569 I have made the Office 365 calendar publicly accessible.
When I log in to my Google calendar at calendar.google.com I see my Office 365 appointments alongside my Google appointments.
I have Alexa configured to access my Google calendar. Alexa can see and schedule appointments on my Google calendar, but cannot see appointments that are from Office 365. I do not want to schedule appointments on my Office 365 calendar from Alexa, I just want to know what's already there.
My iOS devices and iCal on my Mac also don't seem to be able to see the Office 365 appointments in the Google calendar.
Since the appointments clearly show up in my Google calendar, should they not be visible on devices that are connected to Google calendar?