Making a half-note overlap an eight-note

[Bas Wassink]

Hello,

Can someone tell me how I can make a half-note overlap an eight-note ?
In ASCII:

       |
       |  *   *   *
      O  |   |   |
     |   |   |   |
     |___|___|___|

The open notehead (O) should be visible while the stem of the eight-note (*)
under the (O) is connected to the half-note.
I've tried using \ShiftOff or \property Voice.NoteCollision \override
#'merge-differently-dotted = ##t .
None of this worked.

Is there any other property of the NoteCollision engraver I can use? I've
looked at the online documentation but I couldn't find any usefull
properties to set/override.

Hopefully someone understands what I'm asking...


Thanks,

Bas Wassink.