Slattery works in Morgan Stanley's Greenwich office.
He told police that on April 4 he had been driving north on a local street, headed home to New Canaan, when he saw he was being closely followed by a white BMW. Slattery said the car tried to pass him when he got onto the Merritt Parkway, according to Greenwich Police Lt. John Brown.
"Which caused him to ... become upset," Brown said.
"The BMW passed him, and they nearly collided, causing him to swerve out of the way and he, quote, 'nearly collided into a guardrail,'" Brown said.
Four days later, on last Friday, Slattery spotted a white BMW that looked like the car that cut him off, he told cops.
The woman told police that she noticed Slattery's Range Rover begin to follow her, matching her turn-by-turn, as she drove several miles down North Street, and then into the garage at the hospital, Brown said.
"He ... parked directly behind her" in the garage, and then "got out and approached her vehicle," Brown said.
"According to her, he was yelling at her," Brown said. When the woman called police to the scene, "she was visibly shaking and crying."
Asked if he were aware of any other case of road rage with such a long lag between the incident that sparked someone's anger and led them to confront another driver, Brown said, "I haven't seen anything like it before, or read anything like it before."