I need to accomplish this too, having a detail of an event and a list of events on the same page. I tried your suggestion below of setting ContentViewDisplayMode to Master, but it didn't work for me.
What I need to achieve is the following:
1. A list of all events on a page.
2. When selecting a particular event this opens the detail of the event along with a list of all events in a separate div on the page.
I have tried this using a automatically generated detail page as well as an existing page.
Do you or anyone else have any other suggestions?