Cable boxes "offline," cannot connect smart tv

What does the the status of the cable boxes have to do with setting up your smart tv? Especially if the boxes are on and functioning.

Clarify, the smart TV is on and working. I am unable to set up some of the apps like Hulu and Apple+

Since the cable box is registering as offline, the TV connected to it will not connect to internet either...

If those apps are on your smart tv, again that has nothing to do with Comcast.

Since the cable box is registering as offline, the TV connected to it will not connect to internet either...
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You must be doing something incorrectly, your cable box has nothing to do with getting internet to your tv. You’re not running an Ethernet cord from the cable box to the tv are you?

no...is it possible that I am missing something in the modem/router set-up, then? I have one of the newer Xfinity Wifi Gateway XB6-T G95CGM414X Modem/Router. I got rid of the separate router because the guy at the xfinity store told me i ddn't need it anymore. 

 

Like I said, the TV box and channels work fine...but neither of the brand new smart TVs will recognize the internet & the xfinity app shows that all cable boxes are "offline"

Again, you don’t need your cable boxes connected or even powered on for your smart tv to function properly. Have you tried manufacturer support for your tv? Have you looked at your router settings? If the Wi-Fi networks are combined, split them up