This final connection tore the jacket/vapor barrier. Who is patching it, and what material does the spec require?
Do not
Stop if insulation damage is on a chilled/sweating-prone system, exterior duct, rated system, grease duct, or special exhaust and the repair method is unclear.
Why it matters
Finish work is where rough-in becomes visible, inspected, balanced, serviced, and turned over. Clean install and access matter.