Can I get Assistant to include my Exchange calendar events when I ask for my agenda?

[AC Question]

When I ask Assistant to give me my agenda, or to tell me what's on my calendar, it only includes events on my Google account calendar, even though I have my Exchange (Office 365) calendar synced to my device (Pixel, 7.1.1). Exchange calendar events appear in my stock calendar app and widget, but Assistant can't/doesn't recognize them.