IcCube Excel Xmla opens one session (connection) per PivotTable

We have produced some Excel files using Xmla Pivot Tables against Iccube schemas.

Everything is working well except the fact that we noticed :

Each Pivot Table on a single file (even single worksheet tab) triggers a connection to the server. Thus, when opening (and refreshing) a file with 5 Pivot tables, we are asked 5 times to enter credentials for the same connection.

Is there a way to avoid that ? (Of course, for security reasons, we cannot store the password in the connection string, just would like to register one time per connection needed)

I have to produce an excel file with more than 100 Pivots and cannot imagine entering 100 times a password when opening it.

As you can see on following picture, I have 3 opened sessions : 1 (green) for html session and 2 (red) because I opened an excel file with 2 Pivot Tables.

Even with a single connection shared by all the pivot table this seems to be the default behavior of Excel. One possible solution would be to write a macro to request the user credentials and somehow edit the connection on the fly with this information.

Hope that helps.