The lack of a delay doesn't mean they aren't in space.
then how do you explain no delay please? Even when i'm on Skype at 500 miles from me, there is a rather large delay.
That is because you are using a shitty connection.
The primary factor in determining delay is your connection quality.
If you have a good connection, you can get your delay down to a few ms or tens of ms. If you have a shit one, it can take much longer.
Another factor which may be considered under quality is how your signal travels and how many other signals are travelling there as well.
Your skype connection has to go from your computer or whatever, through a router, through a modem, through some kind of connection to an ISP, through loads of connecting points and then the same happening on the other end. That takes time.
Assuming the position was good, for NASA their connection requires going to their antennas and beaming it to the ISS which then receives it. Much simpler.
If it is poorly situated, they can either use crappy ground networks to get to a better spot to broadcast it or they can use satellites to daisy chain the signal.
Your few days comparison doesn't mean much as the ISS has an orbital period of roughly 90 minutes.
Calculate the actual delay required.
If they are positioned well, it will be 4 ms. (so 8 ms for a round trip).
The issue is not the data rate, it is the latency. If the data rate was going to be an issue the lag would get worse and worse as it slowly gets more and more of the data. It would be like trying to stream a youtube video with a dodgy connection.
And as southern hemispherer said, there is always the option of just adding on the "live" part after. Or having them done entirely separately and joining them.