ADS1192 - power consumption in case of using internal clock or external clock

Hi all,

Would you mind if we ask ADS1192?

<Question>
The datasheet P24 shows the following;
"The ADS1191/2 provide two different methods for device clocking: internal and external.
Internal clocking is ideally suited for low-power, battery-powered systems."

If we use external clock, is it possible to reduce "Internal oscillator power consumption=30[uW]"?
Or, regardless of internal clock or external clock, is the total power consumption relation to clock the same or not?

Kind regards,

Hirotaka Matsumoto