IHU to VGM connectivity problem

[glennda5id]

Okay, so it has stopped working again, after a few hours.
Looks like AUD is connected to IHU via MOST and CSD is directly connected to IHU.

So when IHU cant talk to VGM, you wil loose communication with CSD and MOST.

So could be issue with IHU or VGM I guess.