Tails with external Tor
adrelanos (Whonix developer) suggests:
It would be nice if Tails Tor integration could be disabled and if therefore a custom transparent proxy could be used.
Or even better, to prevent identity correlation, if an isolating proxy such as Whonix could be used. Whonix currently consists of a Gateway and a Workstation. The Workstation's client operating system is a Debian GNU/Linux derivative. Tails could also run fine as client os.
Tails and Whonix-Gateway currently use different SocksPorts for stream isolation, these should be standardized.
Original old forum thread: Tails without Tor