diff --git a/modules/heat_transfer/include/relationshipmanagers/GhostBoundary.h b/framework/include/relationshipmanagers/GhostBoundary.h
similarity index 100%
rename from modules/heat_transfer/include/relationshipmanagers/GhostBoundary.h
rename to framework/include/relationshipmanagers/GhostBoundary.h
diff --git a/modules/heat_transfer/src/relationshipmanagers/GhostBoundary.C b/framework/src/relationshipmanagers/GhostBoundary.C
similarity index 84%
rename from modules/heat_transfer/src/relationshipmanagers/GhostBoundary.C
rename to framework/src/relationshipmanagers/GhostBoundary.C
index 5f06fe9050cf..01a250e94d82 100644
--- a/modules/heat_transfer/src/relationshipmanagers/GhostBoundary.C
+++ b/framework/src/relationshipmanagers/GhostBoundary.C
@@ -18,7 +18,7 @@
 #include "libmesh/mesh_base.h"
 #include "libmesh/boundary_info.h"
 
-registerMooseObject("HeatTransferApp", GhostBoundary);
+registerMooseObject("MooseApp", GhostBoundary);
 
 using namespace libMesh;
 
@@ -98,9 +98,19 @@ GhostBoundary::operator()(const MeshBase::const_element_iterator & /*range_begin
 bool
 GhostBoundary::operator>=(const RelationshipManager & other) const
 {
-  if (auto asoi = dynamic_cast<const GhostBoundary *>(&other))
-    if (_boundary_name == asoi->_boundary_name && baseGreaterEqual(*asoi))
+  if (auto asoi = dynamic_cast<const GhostBoundary *>(&other); asoi && baseGreaterEqual(*asoi))
+  {
+    std::set<BoundaryName> our_set(_boundary_name.begin(), _boundary_name.end());
+    std::set<BoundaryName> their_set(asoi->_boundary_name.begin(), asoi->_boundary_name.end());
+    std::set<BoundaryName> difference;
+    std::set_difference(their_set.begin(),
+                        their_set.end(),
+                        our_set.begin(),
+                        our_set.end(),
+                        std::inserter(difference, difference.end()));
+    if (difference.empty())
       return true;
+  }
   return false;
 }
 
diff --git a/framework/src/relationshipmanagers/GhostEverything.C b/framework/src/relationshipmanagers/GhostEverything.C
index 43b49a84252c..8e37650272fd 100644
--- a/framework/src/relationshipmanagers/GhostEverything.C
+++ b/framework/src/relationshipmanagers/GhostEverything.C
@@ -59,7 +59,7 @@ GhostEverything::operator()(const MeshBase::const_element_iterator & range_begin
 bool
 GhostEverything::operator>=(const RelationshipManager & other) const
 {
-  return dynamic_cast<const GhostEverything *>(&other);
+  return baseGreaterEqual(other);
 }
 
 std::unique_ptr<GhostingFunctor>
diff --git a/test/include/userobjects/TestGhostBoundarySideUserObject.h b/test/include/userobjects/TestGhostBoundarySideUserObject.h
new file mode 100644
index 000000000000..6ca8c1d3ee11
--- /dev/null
+++ b/test/include/userobjects/TestGhostBoundarySideUserObject.h
@@ -0,0 +1,24 @@
+//* This file is part of the MOOSE framework
+//* https://www.mooseframework.org
+//*
+//* All rights reserved, see COPYRIGHT for full restrictions
+//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
+//*
+//* Licensed under LGPL 2.1, please see LICENSE for details
+//* https://www.gnu.org/licenses/lgpl-2.1.html
+
+#pragma once
+
+#include "SideUserObject.h"
+
+class TestGhostBoundarySideUserObject : public SideUserObject
+{
+public:
+  static InputParameters validParams();
+
+  TestGhostBoundarySideUserObject(const InputParameters & parameters);
+  virtual void initialize() override {}
+  virtual void execute() override {}
+  virtual void finalize() override {}
+  virtual void threadJoin(const UserObject &) override {}
+};
diff --git a/test/src/userobjects/TestGhostBoundarySideUserObject.C b/test/src/userobjects/TestGhostBoundarySideUserObject.C
new file mode 100644
index 000000000000..afc7568f6b2c
--- /dev/null
+++ b/test/src/userobjects/TestGhostBoundarySideUserObject.C
@@ -0,0 +1,32 @@
+//* This file is part of the MOOSE framework
+//* https://www.mooseframework.org
+//*
+//* All rights reserved, see COPYRIGHT for full restrictions
+//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
+//*
+//* Licensed under LGPL 2.1, please see LICENSE for details
+//* https://www.gnu.org/licenses/lgpl-2.1.html
+
+#include "TestGhostBoundarySideUserObject.h"
+#include "MooseMesh.h"
+
+registerMooseObject("MooseTestApp", TestGhostBoundarySideUserObject);
+
+InputParameters
+TestGhostBoundarySideUserObject::validParams()
+{
+  InputParameters params = SideUserObject::validParams();
+  params.addRelationshipManager("GhostBoundary",
+                                Moose::RelationshipManagerType::GEOMETRIC,
+                                [](const InputParameters & obj_params, InputParameters & rm_params)
+                                {
+                                  rm_params.set<std::vector<BoundaryName>>("boundary") =
+                                      obj_params.get<std::vector<BoundaryName>>("boundary");
+                                });
+  return params;
+}
+
+TestGhostBoundarySideUserObject::TestGhostBoundarySideUserObject(const InputParameters & parameters)
+  : SideUserObject(parameters)
+{
+}
diff --git a/test/tests/relationship_managers/ghost_boundary/gold/test_out.csv b/test/tests/relationship_managers/ghost_boundary/gold/test_out.csv
new file mode 100644
index 000000000000..a9d9a3d56e68
--- /dev/null
+++ b/test/tests/relationship_managers/ghost_boundary/gold/test_out.csv
@@ -0,0 +1,3 @@
+time,num_rms
+0,0
+1,2
diff --git a/test/tests/relationship_managers/ghost_boundary/test.i b/test/tests/relationship_managers/ghost_boundary/test.i
new file mode 100644
index 000000000000..84cb27ab18f2
--- /dev/null
+++ b/test/tests/relationship_managers/ghost_boundary/test.i
@@ -0,0 +1,42 @@
+[Mesh]
+  [gen]
+    type = GeneratedMeshGenerator
+    dim = 2
+    nx = 5
+    ny = 5
+  []
+[]
+
+[UserObjects]
+  [all]
+    type = TestGhostBoundarySideUserObject
+    boundary = 'left right top bottom'
+  []
+  [some]
+    type = TestGhostBoundarySideUserObject
+    boundary = 'left right'
+  []
+[]
+
+[Postprocessors]
+  [num_rms]
+    type = NumRelationshipManagers
+    rm_type = 'geometric'
+  []
+[]
+
+[Problem]
+  solve = false
+[]
+
+[Executioner]
+  type = Steady
+[]
+
+[Outputs]
+  [info]
+    type = Console
+    system_info = 'relationship'
+  []
+  csv = true
+[]
diff --git a/test/tests/relationship_managers/ghost_boundary/tests b/test/tests/relationship_managers/ghost_boundary/tests
new file mode 100644
index 000000000000..f0f5109eabac
--- /dev/null
+++ b/test/tests/relationship_managers/ghost_boundary/tests
@@ -0,0 +1,10 @@
+[Tests]
+  design = 'RelationshipManager.md'
+  issues = '#28330'
+  [test]
+    type = CSVDiff
+    input = test.i
+    csvdiff = test_out.csv
+    requirement = 'The system shall not add a relationship manager ghosting boundaries that are a subset of the boundaries ghosted by another relationship manager.'
+  []
+[]