Legendary engineer Rory Byrne to return to Ferrari for 2014 car:

“Between himself and Adrian Newey, the two engineers have designed every single championship-winning F1 car since 1993. Byrne has designed every car that Michael Schumacher has won races in.”

According to Wikipedia, Newey designed the 1992 Williams, so these two engineers are dominating already since 1992.

UPDATE: Actually, Newey and Byrne designed every driver’s championship winning car since 1992 with the exception of years 2005-2009.