The simple answer is no, since the 396 technically only has 1 serial port, and that is being used to get information from your 430. Of course, the port is bi-directional, so if you were sending information from the 396 to, say, an autopilot, you could still use the incoming side of the port for XRX data. We are looking into the possibility of using a different data type that may support overlaying two or more different data streams, but we do not have an answer on this as yet.