diff --git a/src/PhpSpreadsheet/Calculation/Calculation.php b/src/PhpSpreadsheet/Calculation/Calculation.php
index cdfe7b53..5aa309c5 100644
--- a/src/PhpSpreadsheet/Calculation/Calculation.php
+++ b/src/PhpSpreadsheet/Calculation/Calculation.php
@@ -3456,10 +3456,8 @@ class Calculation
             if ((isset(self::$comparisonOperators[$opCharacter])) && (strlen($formula) > $index) && (isset(self::$comparisonOperators[$formula[$index + 1]]))) {
                 $opCharacter .= $formula[++$index];
             }
-
             //    Find out if we're currently at the beginning of a number, variable, cell reference, function, parenthesis or operand
             $isOperandOrFunction = preg_match($regexpMatchString, substr($formula, $index), $match);
-
             if ($opCharacter == '-' && !$expectingOperator) {                //    Is it a negation instead of a minus?
                 //    Put a negation on the stack
                 $stack->push('Unary Operator', '~', null, $currentCondition, $currentOnlyIf, $currentOnlyIfNot);
@@ -3776,8 +3774,12 @@ class Calculation
                 }
                 //    If we're expecting an operator, but only have a space between the previous and next operands (and both are
                 //        Cell References) then we have an INTERSECTION operator
-                if (($expectingOperator) && (preg_match('/^' . self::CALCULATION_REGEXP_CELLREF . '.*/Ui', substr($formula, $index), $match)) &&
-                    ($output[count($output) - 1]['type'] == 'Cell Reference')) {
+                if (($expectingOperator) &&
+                    ((preg_match('/^' . self::CALCULATION_REGEXP_CELLREF . '.*/Ui', substr($formula, $index), $match)) &&
+                        ($output[count($output) - 1]['type'] == 'Cell Reference') ||
+                        (preg_match('/^' . self::CALCULATION_REGEXP_NAMEDRANGE . '.*/Ui', substr($formula, $index), $match)) &&
+                            ($output[count($output) - 1]['type'] == 'Named Range' || $output[count($output) - 1]['type'] == 'Value')
+                    )) {
                     while ($stack->count() > 0 &&
                         ($o2 = $stack->last()) &&
                         isset(self::$operators[$o2['value']]) &&
diff --git a/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php b/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php
index 84cac747..d1ad229b 100644
--- a/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php
+++ b/tests/PhpSpreadsheetTests/Calculation/Engine/RangeTest.php
@@ -3,6 +3,7 @@
 namespace PhpOffice\PhpSpreadsheetTests\Calculation\Engine;
 
 use PhpOffice\PhpSpreadsheet\Calculation\Functions;
+use PhpOffice\PhpSpreadsheet\NamedRange;
 use PhpOffice\PhpSpreadsheet\Spreadsheet;
 use PHPUnit\Framework\TestCase;
 
@@ -28,7 +29,7 @@ class RangeTest extends TestCase
     /**
      * @dataProvider providerRangeEvaluation
      *
-     * @param mixed $formula
+     * @param string $formula
      * @param int $expectedResult
      */
     public function testRangeEvaluation($formula, $expectedResult): void
@@ -51,4 +52,54 @@ class RangeTest extends TestCase
             ['=SUM(A1:B2 B2:C3)', 5],
         ];
     }
+
+    /**
+     * @dataProvider providerNamedRangeEvaluation
+     *
+     * @param string $group1
+     * @param string $group2
+     * @param string $formula
+     * @param int $expectedResult
+     */
+    public function testNamedRangeEvaluation($group1, $group2, $formula, $expectedResult): void
+    {
+        $workSheet = $this->spreadSheet->getActiveSheet();
+        $this->spreadSheet->addNamedRange(new NamedRange('GROUP1', $workSheet, $group1));
+        $this->spreadSheet->addNamedRange(new NamedRange('GROUP2', $workSheet, $group2));
+
+        $workSheet->setCellValue('E1', $formula);
+
+        $actualRresult = $workSheet->getCell('E1')->getCalculatedValue();
+        self::assertSame($expectedResult, $actualRresult);
+    }
+
+    public function providerNamedRangeEvaluation()
+    {
+        return[
+            [
+                'A1:B3',
+                'A1:C2',
+                '=SUM(GROUP1,GROUP2)',
+                48,
+            ],
+            [
+                'A1:B3',
+                'A1:C2',
+                '=SUM(GROUP1 GROUP2)',
+                12,
+            ],
+            [
+                'A1:B2',
+                'B2:C3',
+                '=SUM(GROUP1,GROUP2)',
+                40,
+            ],
+            [
+                'A1:B2',
+                'B2:C3',
+                '=SUM(GROUP1 GROUP2)',
+                5,
+            ],
+        ];
+    }
 }