A United Boeing 737-800, r was on final approach to Newark’s runway 29 descending through about 400 feet AGL at about 15:02L 

An Expressjet Embraer ERJ-145 from Newark,NJ to Memphis,TN (USA), was rotating for takeoff from runway 04R at the same time.

And a few minutes later, a pilot on the ERJ had a jaunt to the back of the plane