diff --git a/src/Sequence.php b/src/Sequence.php
index f348e9a..596af42 100644
--- a/src/Sequence.php
+++ b/src/Sequence.php
@@ -123,13 +123,13 @@ public function intersections(): self
 
             /** @var Period $current */
             $isContained = $current->contains($period);
-            if ($isContained && $isPreviouslyContained) {
+            if ($isContained && $isPreviouslyContained && !$sequence->contains($current)) {
                 $sequence->push($current->intersect($period));
 
                 return $sequence;
             }
 
-            if ($current->overlaps($period)) {
+            if ($current->overlaps($period) && !$sequence->contains($current)) {
                 $sequence->push($current->intersect($period));
             }