VPN IP address

Hello everybody!

I am new on this Forum and I arrived with a question.
I use a NordVPN on a Windows laptop.

I connect to the internet and my IP is aa.bb.cc.dd
I lunch the NordVPN application.
I chose a country/server in the NordVPN application, I connect to the server.
My public IP is mm.nn.oo.pp

What is the IP address that I am connected to?
In other words, to which IP address my ISP sees that I am connected?

Is it mm.nn.oo.pp?
Is my public IP address the same of the IP address that I am connected to?