It's threads like these that make me run away from CGL Shadowrun.
The debate about how many devices can be slaved to a commlink is pointless because the idea of a limit is not necessary at all.
Firstly, right now today, I could probably Bluetooth 100 devices to my phone. So what? I can only use 1 of them at a time. 60 years from now, the tech will be even better.
Today, any device I have has a thing called a sleep mode, which turns the device off to save power. Thus, even if my phone/commlink is it's master, it doesn't need to govern fiddly squat every second, since the device is off. As a user, I can choose to wake it up on demand, but again, I'm using a finite amount at once. The device wakes up and connects when I interact with it The idea of measuring how many devices can be connected is not a real need. It doesn't enhance the game, it leads to pointless debates and corners you walk yourselves into.
Get rid of the limit idea altogether. It's pointless and overcomplicates things. It in no way makes the game more fun. It makes it more confusing and bushwhacks table time with discussion like this thread.
If you are going to simplify, then actually simplify, and make sure conversations like these are never needed again. Seriously. Step back and look at this thread. This is a bananas discussion to even be having in the first place.