so how about something like this for links?
Multi-language links in Agency Theme
in addition to it we would just add something like this
if active language is en domain = 'https://me-en-site.com'
if active language is fr domain = 'https://me-fr-site.com'
{{ domain ~ 'NAV1.URL'|t }}
to manage both domains, we can try using symlink somehow. i didnt try yet.