"Connection Lost" is the 16th episode of the 6th season of the American sitcom Modern Family and the series's 136th episode overall. It originally aired on ABC on February 25, 2015. The episode was written by Steven Levitan and Megan Ganz, with the former also directing. In the episode, Claire Dunphy waits for a flight while trying to contact her eldest daughter, Haley, after a fight. Unable to reach her, she asks her family where she might be. A series of revelations leads her to believe that Haley is married and pregnant.
"Connection Lost" presents the entire episode through Claire's laptop screen as she uses several applications, such as FaceTime. Levitan developed the concept during a FaceTime call with his daughter and drew inspiration from the short film Noah (2013). Apple Inc. provided the show with several devices, though the company gave no compensation for the use of its products. Filming took place in late 2014. Post-production took significantly longer than usual, requiring the editors and motion graphics producers to recreate a computer's entire interface.
"Connection Lost" received positive reviews from the critics, with praise for its concept, writing, and humor. It has been ranked among Modern Family's best episodes by many publications. The episode won the Primetime Emmy Award for Outstanding Sound Mixing for a Comedy or Drama Series (Half-Hour) and Animation and was nominated for the Writers Guild of America Award for Episodic Comedy.