∀ {C : Type u_2} [inst : CategoryTheory.Category.{u_1, u_2} C] [inst_1 : CategoryTheory.Limits.HasZeroMorphisms C]
  {K : ChainComplex C ℕ} {L : CochainComplex C ℕ} (h : CochainComplex.ConnectData K L) (i j : ℕ),
  (ComplexShape.up ℕ).Rel i j →
    CategoryTheory.CategoryStruct.comp
        ((fun n => HomologicalComplex.restrictionXIso h.cochainComplex (ComplexShape.embeddingUpIntGE 0) ⋯) i).hom
        (L.d i j) =
      CategoryTheory.CategoryStruct.comp
        ((HomologicalComplex.restriction h.cochainComplex (ComplexShape.embeddingUpIntGE 0)).d i j)
        ((fun n => HomologicalComplex.restrictionXIso h.cochainComplex (ComplexShape.embeddingUpIntGE 0) ⋯) j).hom