2008R2: Always hide detail row based on expression AND by toggle/drill down

Hi all

Imagine I have a dataset like so

MasterPackageName | PackageName | Start | End   | Status
----------------------------------------------------------
Parent1           | Parent1     | 12:05 | 13:05 | Done
Parent1           | Child1      | 12:05 | 12:30 | Done
Parent1           | Child2      | 12:30 | 13:04 | Done
StandalonePkg     |StandalonePkg| 11:20 | 11:21 | Failed

My report is set up like this

I want the blue label row (2nd row) and detail row to be hidden by default and toggled by MasterPackageName

I also want the detail row to be always hidden when MasterPackageName.Value = PackageName.Value and count of the rows in the group is greater than 1

I can't get both of these conditions working at the same time. Either the master package details are duplicated in the detail row and the toggle works, or the toggle only shows the master package details or it leaves blank spaces when it's hidden

Is what I want possible?

Edit: Filtering out the packagename = masterpackagename at the data source won't work because I also need to show standalone runs where the masterpackagename and masterpackage are the same

Jakub @ Adelaide, Australia