I now run a operating system as L1 that is directed trough Whonix by internal network. In L1 in run Windows as L2.
In Windows L2 I use proxyfier and has set up a different proxy for every application. I wounder if the stream isolation normally created by the workstation is partly or fully restored now? I’m mostly curious. Its also related to some othere stuff.
Of course there are other integrity issues with Windows. As a side note however I do think that broozer fingerprinting can be completely resolved in this configuration after modifying mozila.