I’ve read a few posts here about the calendar view iCal link taking up to 48 hours to update on Google calendar/Outlook, more than enough to break a workflow. After a few hours, I stumbled on a GitHub repository that forces Google to resync the Cal link, either manually or at a set interval. I did a few tests and it’s working as intended, updating my calendar every 15 minutes. Please note that it’s a Google Apps Script, so will not work with any other calendaring platforms.
The repository is located here: https://github.com/derekantrican/GAS-ICS-Sync. Instructions require very minor modifications on the user’s end but are very clear. I have no affiliation with this developer, but this script certainly solves a problem that I know many of you have had!