Is anyone having trouble connecting any voice to voice feature?

No, this feature is exclusive to the xbox one console. This is one of the many features that makes the Xbox One a new gen Console.

But still, if you are having any trouble with your 360 kinect voice commands, I have this helpful link.

support.xbox.com/.../control-your-xbox-360-with-your-voice

Glad to help.

Hello!

Thanks for reaching out to us here on the forums with this situation. I understand you're having trouble getting Cortana to work in Spain. Unfortunately at this time the Voice Commands system is not yet available in your region. Take a look at the link below:

Note Xbox One voice commands are not available in all regions. To find out if voice options are available in your country or region, see

Xbox One Feature Availability.

That note was found here:
Troubleshoot issues with voice commands on Xbox One

Do any voice commands work at all? For any feature?

don't think so. It's sad too since there is literally no reason to require users to have fancy camera to use voice controls. MS could have easily enabled voice commands to work with any compatible headset, but they wanted to make Kinect seem more appealing
as voice controls are it's most useful feature.

[quote user="LordVonDoom"]

I am missing out.They added a feature to a service I paid for.Then they tell me I can only use it with Kinect even though its voice command and I have a mic.That is a horrible thing to do with your paying customers.If Ms is going to add a voice feature to
bing. Kinect should be an option.They are saying to all their paying customers.You need to pay use again.For a feature that we already have.They have a voice feature ..its called a mic..they have had it since launch.

[/quote]

You are looking at it incorrectly.

They added a voice feature to Kinect to control the Dashboard. They did
not add a voice feature to the "service that you pay for".