∀ {J : Type u_4} [inst : CategoryTheory.Category.{u_3, u_4} J] {K : Type u_6}
  [inst_1 : CategoryTheory.Category.{u_5, u_6} K] {C : Type u_2} [inst_2 : CategoryTheory.Category.{u_1, u_2} C]
  {F : CategoryTheory.Functor J C} {s : CategoryTheory.Limits.Cocone F} {G : CategoryTheory.Functor K C}
  {t : CategoryTheory.Limits.Cocone G} (P : CategoryTheory.Limits.IsColimit s) (Q : CategoryTheory.Limits.IsColimit t)
  (e : J ≌ K) (w : e.functor.comp G ≅ F),
  CategoryTheory.CategoryStruct.comp
      (P.desc ((CategoryTheory.Limits.Cocones.equivalenceOfReindexing e w).functor.obj t))
      (Q.desc
        ((CategoryTheory.Limits.Cocones.equivalenceOfReindexing e.symm
                ((e.inverse.isoWhiskerLeft w).symm ≪≫ e.invFunIdAssoc G)).functor.obj
          s)) =
    CategoryTheory.CategoryStruct.id s.pt