I have two USB-8473 connected together, "CAN_H" to "CAN_H", "CAN_L" to "CAN_L" both are connected to my UUT Can Bus. Communicating with CAN0 to the UUT works. Communicationg with CAN1 to the UUT works. I get multiples update message from the UUT.
However if I am using CAN0 to communicate to the UUT and CAN1 as a "listen only" monitor using MAX's CAN Bus Monitor, I see no data in MAX's CAN Bus Monitor.
Is there any arbitration that needs to be setup?