Compounding global and individual settings in ssh-config files?

[Jim Knoble]

> On Mar 28, 2024, at 13:24, Jochen Bern <Jochen.Bern at binect.de> wrote:
> 
> [ProxyCommand with 'nc'...] if you know how disparate the options of "nc"/netcat can look from one distrib to the next, you'll immediately know why this suggestion has me concerned. :-}

I may be misremembering or completely wrong, but isn't 'ssh -W' intended to be a replacement for 'nc' in ProxyCommands?