A source device communicates with a sink device over a main communication channel and configuration data is sent over a display data channel. A retimer is coupled between the source device and the sink device to improve the quality of signal transmitted from the source device to the sink device. The retimer monitors the data being sent on the display data channel to look for a desired command. Once the command is found, a copy of the command is decoded by the retimer and the configuration data and associated values are stored in a storage. The retimer uses the stored configuration data to modify the received communication data signal to match the operational characteristics between the source device and sink device and then transmit the modified signal to the sink device using these operational characteristics.