Polymetric notation

[Francesco Spiga]

Hi everyone, I apologize for banal question.

I am in trouble in writing different time signatures with equal measures.
Here is the example (it is the Gig from Corelli's sonata n. 10).
Where is the mistake?
Thank you in advance!
F.

vl = \relative c'' {
        \time 2/4
        \set Staff.timeSignatureFraction = #'(6 . 8)
        \scaleDurations #'(2 . 3)
        
        \clef treble    
        \key f \major
        \partial 8 c8
        a4 f8 c'4 f8
        e4. f4 c8 }

bs = 
        \relative c {
        \time 2/4
        
        \key f \major
        \clef bass      
        \partial 8 s8 
        f4 f, 
        c' a }
        
\score {      
        <<
                
                \new Staff \vl
                \new Staff \bs
                               
        >>
        
        
        \layout { 
  }
}