I'm trying to reflect my calendar availability from my companyA google calendar onto my companyB and companyC outlook web application calendars. I set up a flow for this as shown in the image below. I'm using companyA and companyB and companyC as fake examples to obscure the actual email addresses.

This flow is partially working but not entirely working as intended. When I view my Google Calendar under companyA, I can see that me@companyB.com and me@companyC.com appear as guests on a new calendar event, automatically.
However, I cannot see the event reflected in Outlook Web Application under my me@companyB.com or me@companyC.com accounts.
Separately, when I manually add these guests from my companyA Google Calendar, I can actually see them on my me@companyB.com Outlook Web Application account.
I later removed me@companyC.com, and just had the flow add "me@companyB.com" as an attendee. This had the same effect. When I view the event in my companyA Google Calendar, I see "me@companyB.com" listed as a guest. However, when I look at my Outlook Web Application calendar under companyB, I do not see the event.
The "test" for the flow also looked successful.
How can I get these events to actually show up on my me@companyB.com outlook web application calendar?
companyB has restrictions in place that seem to prevent me from adding Outlook as a connector in Microsoft Flow, which is why I am trying to do it this way.