Can you connect flexray between the gateway and ECU and ABS and try again?

I know the ECU communicates with the gateway over flexray (and not CAN) for UDS in an MLBevo car, but I haven't tried adding an ABS module on the bench to get flexray to initialise.

Sorry I did not appreciate you'd already connected Flexray. I doubt you're that far away as I gather that ECU, ABS and gateway are enough, but haven't tried an ABS module myself, just ECU and gateway from different cars and there was something like a flexray initialization fault code in the gateway.

I also had to buy an RS6 because of all this to develop what I needed, but would like a working bench setup for other cars eventually.

It would be interesting to check which of the J104 and J1121 are needed to initialize Flexray on a car. If it continues to communicate with the ECU after they unplugged, it doesn't mean they weren't needed to start with. It also doesn't tell us whether they need to have the same VIN. I would guess that immo isn't needed since ODIS can do immo servicing by communicating with modules.

Hmm, but do i maybe need anything else because of my research should ABS,ECU and Gateway be enough?
I think i gonna need to spend more time on it.