Outlook pipelines trigger off multiple calendars in a single mailbox?

Having an issue with pipelines and multiple calendars in a single mailbox.
I can get calendar events created/updated/deleted into a table with a single calendar, and am using the id of the event to track unique records.

I'm finding in the pipeline activity that event ids aren't feeding into the pipeline with unique values, but the create/update/delete is working somehow anyway with one calendar. Does Quickbase track uniqueness of outlook events somewhere behind the scenes? It works so I'm not complaining too much on this one.

My actual question...Adding a second pipeline, pointed at a different calendar in a mailbox doesn't trigger the additional pipeline at all. Is this possibly a bug? This function reads like you can connect multiple calendars from the same mailbox.