James Harrison the Patriot is already starkly different than James Harrison the Steeler. Once outspoken, which was befitting of the Steelers’ culture, Harrison was concise, reserved and even dismissive Friday when he fielded 16 questions in two minutes for the first time in his young Patriots tenure. The 39-year-old rested on a 439-word statement on his Instagram account from earlier in the morning and quickly changed the direction of the conversation in the afternoon when asked twice about his messy breakup with the Steelers, who have harshly criticized him all week. On Instagram, Harrison said he didn’t sign a two-year contract with the Steelers to “collect a check and a participation trophy … and be a cheerleader.” He admitted he asked to be released three times this season when the Steelers refused to put him on the field on game days, as he only played 40 snaps all season. Harrison said the social media post contained everything he needed to say about the topic. “That’s it,” Harrison said. “Just the statement.” Harrison signed with the Patriots on Tuesday after a quick visit to Gillette Stadium, and he said he didn’t consider anywhere else because the Pats were the only team to show any interest. “There was no other offers,” he said. So why continue? Harrison is a two-time Super Bowl champion and one of the best edge linebackers of his generation. Why join a longtime rival in the twilight of his career?