Here it is in the flesh. RGB out of Station 201 goes through the RGBtoHDMI, out of there an into HDMI switch A, which then goes out to switch B and out to the joiner cable. Switch B then goes out to the other socket of the joiner cable and out through the other side of switch B to the monitor, via an HDMI to VGA adapter as I only have VGA monitors (or CRT screens of course).