Speaking of team efforts, did everyone here see "Dead Freight" from Breaking Bad? It made me wonder if there really are dead zones that the train tracks pass through. Nowadays it may be the case that no matter where the tracks are there will always be the ability to communicate, like how no matter the size of the sphere, if it has a particular cylinder-shaped area removed, the remaining sphere will be the same volume:
https://m.youtube.com/watch?v=J51ncHP_BrY - "The Napkin Ring Problem - YouTube"