I have a web page with 2 webpart connections:
1. Two list webparts that I connected using Edit Page in SharePoint
GUI.
2. A data view (consumer) that I created with SP Designer, connected
to a list web part (provider).

Now, I want to find all the connections in this code:

SPFile file = web.GetFile("http://sites/sp/default.aspx");
SPLimitedWebPartManager wpMgr =
file.GetLimitedWebPartManager(PersonalizationScope.Shared);
SPWebPartConnectionCollection connections =
wpMgr.SPWebPartConnections;

Surprisingly, wpMgr.SPWebPartConnections is always empty !!!

Then I tried to loop through all the webparts and check their
ConnectionID and Conections members.
These members were valid only for the consumer of the 1st connections.
The 2nd connection (dataview/list) did not appear in any webpart!

So how can I find such connections (involving dataviews) in code?

(Note: I tried to create the 2nd connection either from Designer or
from Edit Page, but the results are the same).