House lawmakers have begun slowing the pace of Gov. Chris Sununu’s proposal to consolidate the University System of New Hampshire and Community College System of New Hampshire. Sununu set an aggressive timeline for completing the project. House Bill 2, the companion to the budget, would establish by June the New Hampshire College and University System, governed by a single board of trustees. Its first task would be to hire a chancellor. By the close of this year, the unified board would recommend legislation to combine the two systems. And the consolidated system would be up and running by July 1, 2023.