ChordNames Vertical Spacing

[Gregory Hollands]

Salutations,

How do I reduce the vertical spacing between two rows of chord names?

Thanks,
Greg

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\version "2.22"

IntroChords = \chordmode {
  \time 6/8
  a2.:m c2. d2. f2.
  a2.:m c2. e2. e2.:7
  \break
  a2.:m c2. d2. f2.
  a2.:m e2. a2.:m e2.:7
}

<<
  \new ChordNames \with {
    \override BarLine.bar-extent = #'(-1 . 3)
    \consists "Bar_engraver"
  }
  { \IntroChords }
>>

\layout {
  indent = #0
  \omit Score.BarNumber
}

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