While the Patrice Bergeron line was excellent in Sunday’s 4-3 loss to the Canadiens — with Bergeron getting a goal and two assists, Brad Marchand earning three assists, and Tyler Seguin adding a goal and assist — the No. 1 threesome of David Krejci, Milan Lucic and Nathan Horton had a quiet night. “They were forcing a lot of plays in tight,” said B’s coach Claude Julien. “They were getting inside the blue line and trying those little, small plays that have been successful for them. But Montreal defends well, they come back and take care of the middle very well. Putting pucks at the net just like Bergy’s line did would have helped them a lot more.” Julien praised the efforts of third-line center Chris Kelly, who clanged two shots off posts. But the coach also noted his line was on for Montreal’s tying and winning goals in the final period. “We need that line to have a little more chemistry offensively, and also chemistry defensively,” Julien said. “Right now it’s not quite there.” A common presumption is that general manager Peter Chiarelli is trying to acquire a veteran forward to join the third line, someone with the skills to move up to one of the top two lines if needed. Meanwhile, Bergeron was named the NHL’s second star for the week yesterday. Montreal forward Max Pacioretty was the No. 1 star.