You gotta be connected to the internet. Insulet sends a (cell phone like) controller with the 5. You need a separate cell phone for the Dexcom app. You can’t run the 5 with the Dexcom receiver, you have to run the Dexcom app on your cell. Omnipod 5 runs thru the cloud, so if you loose internet connection, I assume you can still deliver insulin, but you loose the AI functionality. For us, it shouldn’t matter because we plan to run manual.
There’s a juicebox podcast series for training (in addition to whatever training the educator requires): Omnipod 5 Pro Tip Series Podcast | Omnipod