I have a pacemaker with monitoring. It communicates with my app via radio frequency (commonly referred to as Bluetooth nowadays). It does not communicate 24/7. This is where people are getting confused. Every night between midnight and 3 am usually, the app sends an interrogation to my pacemaker, and only my pacemaker not anyone else's, and my pacemaker sends a data pack to the app. If the app receives a data pack with concerning data it is then transmitted to the monitoring company. Then nothing else happens until the next interrogation 24 hours later.
It looks like what happened in this case is the app sent an interrogation at 2:28 am but the pacemaker did not answer. This happens sometimes with mine if my phone is dead or not in range when the interrogation is sent.
The important thing to keep in mind is this is not like an EKG that is collecting and sending data in real time. The pacemaker and app are not talking to each other outside of the routine nightly interrogation. The only thing that should be assumed from the 2:18 am disconnected information is that when the app sent a query to the pacemaker the app could not contact the pacemaker because it was out of range.