PS4 - Game Questions

[Nemesis]

I see the PS4 Remote Play app has finally come to the Sony Z2, but when searching for the PS4 it does so via internet?

My PS TV did that as well first, but is/can connect to the PS4 via my wifi setup. Had to link them via a code though after it failed finding it over the internet. After linking though, now when I select PS4 link on the menu, it connects quick every time.