Yes. If there is more power available from DC station, vehicle will consume it.
When consumers are activated (AC, PTC etc) they all act as one big consumer.
Another battery will act the same. Power is measured by DC station (blue) but
not by battery (green).
Notice me turning on heater in the middle of DC charge cycle (power that goes
into battery continues to drop but current supplied by DC station spikes and
then later on, when cabin heats up, is hardly noticeable (less than 1kW), and at
the moment I did the screenshot I opened door and HVAC cranked up again,
notice 8,4kW battery input and 11,8kW DC station output.
Half of the graph is filled with home charging (last drops) before my departure.
Note that maximum current (120A) was available for few minutes, and then
it started dropping rapidly (first cell reached 4.1V early) - chilly battery (+15*C).