A: Solid Point

Adrian checked the readouts on the communication array that was holding itself stationary out beyond the cloud of icy fragments at the edge of their solar system.

Every message that they successfully received was like a confirmation that their own transmissions were likely being successfully delivered. There were no guarantees of course. The modules that theoretically maintained the light net across every inhabited solar system sometimes fell out of alignment with each other, and the effects of that often went unnoticed for decades, or even centuries.