diff --git a/qiskit/primitives/__init__.py b/qiskit/primitives/__init__.py
index 7aaea3b4e21b..5c0d7f68bdc1 100644
--- a/qiskit/primitives/__init__.py
+++ b/qiskit/primitives/__init__.py
@@ -67,7 +67,7 @@
 from .base import BaseEstimator, BaseSampler
 from .base.estimator_result import EstimatorResult
 from .base.sampler_result import SamplerResult
-from .containers import BindingsArray, EstimatorTask, ObservablesArray
+from .containers import BindingsArray, EstimatorTask, ObservablesArray, PrimitiveResult, TaskResult
 from .estimator import Estimator
 from .sampler import Sampler
 from .statevector_estimator import Estimator as StatevectorEstimator
diff --git a/qiskit/primitives/base/base_estimator.py b/qiskit/primitives/base/base_estimator.py
index f4358d37cbfd..331e041f367d 100644
--- a/qiskit/primitives/base/base_estimator.py
+++ b/qiskit/primitives/base/base_estimator.py
@@ -14,9 +14,9 @@
 
 .. estimator-desc:
 
-=====================
+========================
 Overview of EstimatorV2
-=====================
+========================
 
 EstimatorV2 class estimates expectation values of quantum circuits and observables.
 
@@ -104,9 +104,9 @@
     estimator.run(zip([psi1], [hamiltonian1], [theta1]))  # for EstimatorV2
 
 
-=====================
+========================
 Overview of EstimatorV1
-=====================
+========================
 
 Estimator class estimates expectation values of quantum circuits and observables.