On Linux, each console (let's say xterm to keep it simple) is an independent process, and is connected to its own pty (pseudo tty). You can open an xterm with a special command (as opposed as running a shell). If you want to display data coming from a thread to your xterm, you could use named pipes (created with mkfifo); the working thread could write to the named pipe, and the script run from the xterm would display what's coming into the named pipe.
I don't have any code at hand for an example, but it's quite easy to do.
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