The hard part about interviews with elusive subjects usually is getting them to agree to the interview in the first place.
That turned out to be the easiest thing about “The Two Bills,” a documentary that premieres at 9 p.m. Thursday on ESPN and examines the relationship between Bill Parcells and Bill Belichick.
How long did it take to arrange their joint sitdown last spring in the Giants’ locker room at MetLife Stadium?
“It took 2 ½, 3 years,” said Ken Rodgers, who directed the documentary and is coordinating producer at NFL Films, which produced it for ESPN’s “30 for 30” series.