Wi-Fi On Or Off?

Just wondering if anyone can help.
After some issues trying to update the maps I finally sorted it after using a Wi-Fi extender in our home.
My question is this :
After installing the Wi-Fi extender in our home the updates started to download in the car but when I turned off the ignition I think the Wi-Fi also knocks off, is that correct ?

If so it’s taking forever to download large updates over Wi-Fi, especially as it knocks off when the cars ignition is switched off ?

I’m also wondering if theres a way to check the 4g connection ?

I can’t imagine the installation working if you turn off the car.
It’s like trying to update Windows while turning off the computer.

Yeah I thought as much.

I just thought when it was updating the DS software a while ago it carried on with the update when I switched the car off, but I’ve realised now that those updates are done over the 4g connection not Wi-Fi.