NOT merging same notes in different voices

[Johannes Roeßler]

Hi Group,

how can I have a "tenuto" line directly at the note (and not above or 
below the invisible stem?).

I have two stemless voices in one staff.


8<------------

\version "2.24.0"

<<{\hide Staff.Stem a4--  }\\{\hide Staff.Stem c4-- }>>

-------------->8


Best regards
Joei