TMC4671 - When using the TMC4671 with the TMC6200, why is the current ADC phase not in phase with the voltage output?

It is important to note the TMC6200 inverts the input signal, which needs to be taken into account by the TMC4671. As such, please set TMC4671 register ADC_I0_SCALE (0x09)/ADC_I1_SCALE(0x08) to negative -256.