Walk forward to the socket. Ignore it for now and head towards the middle of the catwalk. Turn to your right and you will see see another piece of catwalk you can pull. Pull the catwalk towards you to make a shortcut to the poles. Head back to the socket and connect to it. Walk across the shortcut and walk to your right so your are heading towards the socket we need to connect to. Use your other hand to pull the catwalk to make a new shortcut. Wrap around both poles as shown above and attach to the socket to complete the puzzle.