I've been reading about the Roost Smart Battery. Essentially, it's a battery you can install in your smoke detector which is supposed to notify you on your phone if your smoke detector goes off. It also gives you the capability of silencing your smoke detector from your phone.
According to The Wire Cutter:
...Roost will automatically notify someone else about the alarm in your home when it’s triggered, without giving that person control over all your other smart-home devices (as is the case with Nest’s version of this feature). But unlike the [Nest] Protect, the Smart Battery doesn’t give you voice alerts, wireless interconnectivity, integrations with smart-home devices, or self-testing sensors [...]
According to my understand (maybe flawed) of the word interconnectivity, it means something along the lines of this definition from Wikipedia:
Interconnectivity refers to the state or quality of being connected together, or to the potential to connect in an easy and effective way
If the Smart Battery is not in the state of being connected together with your phone, how would they communicate? There is obviously a flawed premise. I assume the flawed premise is my definition of the term interconnectivity. What do they mean by saying that the Roost Smart Battery does not give wireless interconnectivity?