(ADV7281A)Power down sequence

Hi !

I have a question about ADV7281A.

Our customer are designing their PCB for automotive.

They want to know the power down sequence.

At datasheet, this is written.

But I couldn't understand what is written.

Our customer want to power down 3.3V and 1.8V at same time.

Is it OK?

Our should they keep 3.3V > 1.8V always?

Best regards