I think this is not exact, but as no one had yet the opportunity to implement a moving baseline + rtk fix setup with SkyTraq hardware, what will follow is only assumptions.
I guess one of the two receivers in the cab will get the NTRIP stream and the other not. So if you lose fix on this receiver, the tractor position becomes inaccurate. If this receiver is also the moving base (like in a setup using two ZED-F9P), you keep the heading. On the other hand, if only the other receiver (the rover of the moving baseline system) loses rtk fix, heading becomes inaccurate but you should keep the absolute position of the tractor.
To properly address these issues and provide AOG with the most relevant data, it would probably be necessary to use an ESP32 or equivalent as an interface (like it is done with dual antenna setups with ZED-F9Ps and MTZ8302 program). Advantages would be at least the following :
- Reduced complexity in AOG to keep it compatible with as much receivers as possible
- Ability to generate a “virtual antenna” in the middle of the two physical antennas, with offsets if needed
Here, people discussed about physical implementation of a left/right moving baseline setup, and here about the (dis)advantages of a front/back setup.