AC41634 - Dunkling v. Lawrence Brunoli, Inc. (Whether defendant general contractor was principal employer; whether Compensation Review Board improperly affirmed ruling denying motion to correct; “The defendants’ central claim on appeal is that the board erred as a matter of law when it affirmed the commissioner’s determination that, on the date that the plaintiff, Michael J. Dunkling, sustained a compensable injury, Brunoli was a principal employer pursuant to General Statutes § 31-291. We affirm the decision of the board”).