cant't move a chord

[Stefan Thomas]

Dear community,
I would like to change the horizontal position of an interval in the below quoted snippet. But I don't know, how to do.
Here is the example:
\version "2.13.0"
 {
   \time 2/4 
   %the first examnple without moving the note columns
   \times 2/3 {
  <ais'' dis'''>4  -> \p eis''4  -- <a'' cis'''>8
        -. [ gis''8 -. ] }
    
    \times 2/3  {
        <ais'' dis'''>4  -> eis''4  -- <a'' cis'''>8
        -. [ gis''8 -. ] }  \break
      %now I'm trying to move them, but without any visible difference
    \time 2/4 
      \times 2/3 {
     \once \override NoteColumn #'force-hshift = #-32 %this does nothing, why?
     \shiftOn
     <ais'' dis'''>4  -> \p eis''4  -- <a'' cis'''>8
        -. [ gis''8 -. ] }
    
    \times 2/3  {
        <ais'' dis'''>4  -> eis''4  -- <a'' cis'''>8
        -. [ gis''8 -. ] } 
    
    }