Sometimes it takes a period or two for a hockey coach to recognize who his hot hands are, and that’s exactly what happened in Tuesday night’s three-goal comeback with Bruins defenseman Dennis Seidenberg. The German defenseman was solid throughout the eventual 4-3 shootout loss to the New York Rangers at TD Garden, but Seidenberg had his number called quite a bit by Claude Julien in the third period as he responded favorably to the increased duty. Seidenberg was also inserted back into the Bruins power play in the third period in place of rookie Dougie Hamilton, and helped produce two of the B’s scores in the stunning last-minute comeback. “He was having a good game. I really felt he was playing very well. He seemed to be willing to shoot that puck, so we put him back there [on the power play] and gave him that opportunity,” said Claude Julien. “It’s just about getting a feel about what you’re seeing form your bench and from your team on specific nights. He was good tonight…I thought he was a real good player for us. [He was] probably our best defenseman tonight.” Befitting Boston’s best defenseman Seidenberg led the Bruins with 26:52 of ice time in the extra session game, led the Bruins with a plus-2 and finished with a pair of assists while admitting after the game he was feeling pretty good. “It’s hard to explain but I felt like I had my really good [skating] legs moving around out there,” said Seidenberg, who had only a single assist in eight games this season entering Tuesday night’s loss to the Rangers. “We had a lot of pressure going on. When we get pucks to the net with bodies there anything can happen, and that’s what we did.” It was the first goal in the third period that keyed the whole comeback, and actually arrived a second after the Boston power play had expired. But the PP unit was still on the ice and that meant Seidenberg was out there after Julien had slotted him back into the special teams crew.