BHI360/BMM350 quaternion magnetometer orientation

Hi I had a few questions about using quaternions and orientation with the BHI360 and BMM350.

The data sheet mentions that the BMM Sensor should be oriented with the pin 1 marker rotated 180 degrees relative to the BHI360:

 

However the BHI360 shuttle board has the sensor orientated with a 0 degree offset:

Does this matter for 9 DOF orientation and rotation vector?

Are other rotations valid?

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