The pairing of Duncan Keith and Adam Boqvist has been a staple atop the Blackhawks’ defensive intensity chart since December. Despite their radically other personalities — Keith is deadpan at his very best and prickly at his worst, whilst Boqvist radiates goofiness — and much more other ages, they’ve advanced robust chemistry off the ice, too. But up towards the deadly Oilers duo of Connor McDavid and Leon Draisaitl — and with simplest two, possibly 3, video games left to unravel them — the Keith-Boqvist pairing is being examined greater than ever. “Experience is important, but those two guys are a big part of our team and we need to get them going,” trainer Jeremy Colliton mentioned Tuesday. “We addressed