Pairing of Parcells’ protégé’s in San Fran makes plenty of sense

So why would the 49ers show interest in coach Tom Coughlin? Apart from the fact that: (1) they’re looking for a coach who can win Super Bowls; (2) Coughlin has won two of them; (3) along the way to his most recent Super Bowl win, Coughlin beat Jim Harbaugh and the 49ers, Coughlin and G.M.…