A connection assembly for connecting a control line to a component is provided. In one embodiment, a system includes a control line coupled to a tubing hanger with a connection assembly. The connection assembly includes a first fitting connected to the control line and to the tubing hanger, with the first fitting sealing against the control line and the tubing hanger, and a main body disposed about the control line and connected to the tubing hanger with the main body sealing against the tubing hanger. The connection assembly also includes a second fitting connected to the control line and to the main body so as to seal against the control line and the main body, an internal cavity, and a test port. Additional systems, devices, and methods are also disclosed.