Outlook ics calendar not updating
But I don't see a way to view the url or share the url in order to overlay it from internet source. Use the ics link to subscribe to your calendar from your O365 work account et voila!
The Google Calendar sync works in the same way, and there is no delay.
If you want to force the calendar to update, you can try to remove the calendar and re-add it which has worked for some Brightpod customers in the past.