I created the routing profile and put it online, some other person then took it and actually integrated it and got it merged. So, I did the fun part and they did the boring (but also important) work.
So I'm not able to claim the full credit, but close enough to get a lot of bragging rights.
When you make a phone call, the antenna's are used 100% for calling and using data is disabled (or at least, it used to be). Android might thus "pretend" that it is still connected.