BQ24075T: TMR setting in case of DPPM operation

Hi all

Would you mind if we ask BQ24075T?
Our customer uses BQ24075T with follows setting;

<BQ24075T's setting>
EN2,EN1: 0,1 (500 mA. USB500 mode)
ILIMT = 500mA
ISET　= 420mA
TMR   = 4h

In case of system current =300mA, charging current reduces to 200mA.
Conunting operation is in proportion to charging current, the vaule is 200mA/420mA.
As the result, count up will become approximately half cycle.
SAFETY TIMER ERROR will be 8h.(4h×2)

Is it correct?

Especially, we would like to confirm the description
"For example, if the charging current is reduced by half for two minutes, the timer clock is reduced to half the frequency and the counter counts half as fast resulting in only one minute of "counting" time."
on the datasheet P17 exactly.

Kind regards,

Hirotaka Matsumoto