Asynchronously wake up exteded sleep external interrupt

Hello support,

I am considering using external interrupt input of DA 14585 to asynchronously return (from exteded sleep) using external MPU.
I am referring to the document (Training_04_Sleep mode configurations and power measurement_0.pdf). (Page 9)

SDK :6.0.8.509.
The external MPU and DA 14585 are connected using SPI I/F.

I have two questions.