Biblatex - hyphen between author names when using citet

Question

I cite elements from my bibfile using citet{key}. The reference appears as "Name1, and Name2 (year)" in text where year is a link leading to the bibliography. Now, instead of the "and" between the the authors name, I want to use a hyphen, e.g.

The Name1-Name2 (2019) formula implies ...

Any ideas of I could adjust the citet command?

I use biblatex as follows.
usepackage[style=ext-authoryear-comp,
            backend=biber,
            natbib=true,
            uniquename=false,
            uniquelist=false,
            giveninits=false,
            dashed=false,
            backref=false,
            maxbibnames=99,
            maxcitenames=3,
            isbn=false,
            doi=false]{biblatex}

moewe · Accepted Answer

With DeclareDelimFormat you can change the delimiter between names per citation command.
documentclass[british]{article}
usepackage[T1]{fontenc}
usepackage{babel}
usepackage{csquotes}

usepackage[style=ext-authoryear-comp, natbib=true]{biblatex}

DeclareDelimFormat[textcite]{multinamedelim}{textendash}
DeclareDelimAlias[textcite]{finalnamedelim}{multinamedelim}

addbibresource{biblatex-examples.bib}

begin{document}
Lorem autocite{sigfridsson}

The textcite{sigfridsson} formula

The citet{sigfridsson} formula

printbibliography
end{document}

I'd probably prefer to define a new cite command for this so that textcite is still usable as normal.
documentclass[british]{article}
usepackage[T1]{fontenc}
usepackage{babel}
usepackage{csquotes}

usepackage[style=ext-authoryear-comp, natbib=true]{biblatex}

makeatletter
newcommand*{attribcite}{%
  AtNextCite{%
    DeclareDelimFormat{multinamedelim}{textendash}%
    DeclareDelimAlias{finalnamedelim}{multinamedelim}%
  }%
  textcite}
makeatother

addbibresource{biblatex-examples.bib}

begin{document}
Lorem autocite{sigfridsson}

The attribcite{sigfridsson} formula

As shown by textcite{sigfridsson}

printbibliography
end{document}

Biblatex - hyphen between author names when using citet

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