Joe Sacco’s message to Bruins? Keep it simple … and create some ‘chaos’

Joe Sacco secured his first win as Bruins interim head coach on Thursday. inslow Townson/Getty Images)Joe Sacco isn’t looking to reinvent the wheel with the Bruins.

Time isn’t on the side of Boston’s interim head coach, not with a reeling roster in need of results.

Continued lapses in execution, severe erosion in Boston’s stingy defensive structure, and a dearth of scoring conduits cost Jim Montgomery his job on Tuesday.

With only a short runway granted for Boston’s new bench boss to brace his team before Thursday’s home game vs. Utah, Sacco’s message was clear in his first days at the helm.

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“It’s being harder to play against,” Sacco said Wednesday of Boston’s first order of…