Hello,
The two channels share the same FIFO inside the bridge, therefore if you are using both simultaneously it can cause overwrite of the data. Also overrun errors occur if the transmit data rate exceeds the receive FIFO servicing latency that will occur if you are accessing the FIFO with the 2 channels at the same time, but it's hard to tell if that is the reason of your issue. Could you share the configuration you used?
Regards,
Darío
