on the host install socat:
sudo apt install socat
then run:
socat -d -d pty,raw,echo=0 pty,raw,echo=0
it will show something like this:
.... N PTY is /dev/pts/1
.... N PTY is /dev/pts/2
then open new tab terminal and type:
cat </dev/pts/1
now go to whonix-ws-vbox (or any VM) settings -> Serial Ports -> Tick enable then:
Port Number: COM1 (default)
Port Mode: Raw File
Path/Address: /dev/pts/2
now run Whonix-WS-Vbox and all the process will be mirrored to
cat </dev/pts/1