welcome

consider this example

Namespace Logs.UI.WebControls


    Public Class LogControl


        Public LogControlDesigner1 as LogControlDesigner


    End Class


    Friend Class LogControlDesigner


    End Class


End Namespace

You cannot expose the LogControlDesigner1 due to it protection level.

The type of LogControlDesigner accessible within the same assembly,

so the instance LogControlDesigner1 of type LogControlDesigner also accessible only within the same assembly.

same thing apply when you inherit a public class from friend base class.

you can give an example of TrackerDetails, Tracker and LogControl.