∀ (𝕜 : Type u_1) {B : Type u_2} [inst : NontriviallyNormedField 𝕜] [inst_1 : TopologicalSpace B] {F₁ : Type u_3}
  [inst_2 : NormedAddCommGroup F₁] [inst_3 : NormedSpace 𝕜 F₁] {E₁ : B → Type u_4}
  [inst_4 : TopologicalSpace (Bundle.TotalSpace F₁ E₁)] {F₂ : Type u_5} [inst_5 : NormedAddCommGroup F₂]
  [inst_6 : NormedSpace 𝕜 F₂] {E₂ : B → Type u_6} [inst_7 : TopologicalSpace (Bundle.TotalSpace F₂ E₂)]
  [inst_8 : (x : B) → AddCommMonoid (E₁ x)] [inst_9 : (x : B) → Module 𝕜 (E₁ x)]
  [inst_10 : (x : B) → AddCommMonoid (E₂ x)] [inst_11 : (x : B) → Module 𝕜 (E₂ x)]
  (e₁ : Trivialization F₁ Bundle.TotalSpace.proj) (e₂ : Trivialization F₂ Bundle.TotalSpace.proj)
  [Trivialization.IsLinear 𝕜 e₁] [Trivialization.IsLinear 𝕜 e₂], Trivialization.IsLinear 𝕜 (e₁.prod e₂)