Why was the line cut?

@XfinityTommy​ For the six years I have lived at this location I have shared the line with zero people. It solely goes to my home and mine alone.

Thank you for your time and patience, @user_j92k3  Aerial cable (meant for poles) is generally not rated for direct burial. It lacks the heavy, waterproof outer jacket needed to survive underground elements. Burying aerial cable usually results in water damage and signal failure within months which would explain why the technician cut the line at the pole and attached a separate cable.

Thank you for this explanation. Is there any reason that the same cable is not used throughout the entirety of the connection? Is it too heavy to be used in air between the poles?

Good Morning, @user_j92k3 It is not because the underground line is too heavy, but rather because aerial and buried cables are built with entirely different materials and shielding meant for their specific environments. Buried lines (underground service drops) are built to withstand moisture, soil acidity, and accidental nicks from gardening. They rely on heavy, thick rubber or gel-filled waterproof jackets. They do not require built-in steel support strands. Aerial lines (hanging from the pole to your home) must support their own weight across long spans. They are constructed with an integrated, bare steel "messenger" wire running alongside the coaxial cable to bear all the tension.