[Coco] Connecting the serial port of a coco emulator to a PC

[Tony Cappellini]

Has anyone connected the (virtual) serial port output of any coco
emulators to a PC or other computer (a real coco)?

With a physical serial port cable, (or null modem adapter) it's easy
to flip the RX/TX lines.

Now- If one wanted to connect two coco emulators together across the
serial port, on the same PC.. is this even possible, since there
is no physical cable to swap the RX/TX lines?