Saying: Hey Cortana, watch NFL Network does not change the channel to NFL Network

This does not work and I doubt it is working for you either. You would not immediately hear NFL Network start as you say. What you might have heard was NFL Now which is very different. NFL Now is on the main screen of the app and immediately plays when
the app is launched. NFL Now is a series of current video clips of sports reporters about 3 minutes each. Look at the menus at the bottom of the screen when you launch the app. The NFL Network is the live broadcast the NFL Network channel the same as what
is currently being broadcasted on your cable TV. The NFL Network is on page two after selecting Channel Guide from the bottom menu of the main screen/page one. NFL Network plays on my Xbox 360, but not on my Xbox One.

SC Marx...This does not work and I doubt it is working for you either. You would not immediately hear NFL Network start as you say. What you might have heard was NFL Now which is very different. NFL Now is on the main screen of the app and immediately plays
when the app is launched. NFL Now is a series of current video clips of sports reporters about 3 minutes each. Look at the menus at the bottom of the screen when you launch the app. The NFL Network is the live broadcast the NFL Network channel the same as
what is currently being broadcasted on your cable TV. The NFL Network is on page two after selecting Channel Guide from the bottom menu of the main screen/page one. NFL Network plays on my Xbox 360, but not on my Xbox One.

Actually if you mean in order to view NFL network content, you need a provider that carries the NFL network channel.

"To view NFL Network content users must have a television service provider that carries the NFL Network channel."

This link shows the current providers:

http://nflnonline.nfl.com/nflno/?icampaign=mvpd_nfln_subsad&cvsorc=nfln.mvpd.subsad

Actually you probablywon't see directv in that list, the NFL redzone in the NFL app is the NFL operated version that they sell to cable networks outside of the Directv Sunday Ticket package. With DTV there is no stand alone redzone channel so they assume
you'll be watching it from home or via the NFL Sunday Ticket DTV app.

the NFL app is a stand alone app run by the NFL and the NFL network.... Sunday Tickets contract with Direct TV ends after this season and will not be picked up.... ( as far as I hear ) so it is a fresh start for MS/XB1 & the NFL

from what I gather

the NFL app will have the NFL Network channel... including the RED-ZONE channel and our Fantasy leagues from NFL.com will be shown live either by snap or a rolling marque banner on the bottom..