diff --git a/lib/ads/interstitial_ad_manager.js b/lib/ads/interstitial_ad_manager.js
index d2c66a7c9b..5e0e2dd172 100644
--- a/lib/ads/interstitial_ad_manager.js
+++ b/lib/ads/interstitial_ad_manager.js
@@ -102,7 +102,7 @@ shaka.ads.InterstitialAdManager = class {
       }
       this.lastTime_ = this.baseVideo_.currentTime;
       const currentInterstitial = this.getCurrentInterstitial_(
-          /* needPreRoll= */ true, /* numberToSkip= */ 0, this.lastPlayedAd_);
+          /* needPreRoll= */ true);
       if (currentInterstitial) {
         this.setupAd_(currentInterstitial, /* sequenceLength= */ 1,
             /* adPosition= */ 1, /* initialTime= */ Date.now());
@@ -121,8 +121,7 @@ shaka.ads.InterstitialAdManager = class {
           this.lastTime_ < this.lastPlayedAd_.startTime) {
         this.lastPlayedAd_ = null;
       }
-      const currentInterstitial = this.getCurrentInterstitial_(
-          /* needPreRoll= */ false, /* numberToSkip= */ 0, this.lastPlayedAd_);
+      const currentInterstitial = this.getCurrentInterstitial_();
       if (currentInterstitial) {
         this.setupAd_(currentInterstitial, /* sequenceLength= */ 1,
             /* adPosition= */ 1, /* initialTime= */ Date.now());
@@ -456,13 +455,12 @@ shaka.ads.InterstitialAdManager = class {
 
 
   /**
-   * @param {boolean} needPreRoll
-   * @param {number} numberToSkip
-   * @param {?shaka.extern.AdInterstitial=} lastPlayedAd
+   * @param {boolean=} needPreRoll
+   * @param {?number=} numberToSkip
    * @return {?shaka.extern.AdInterstitial}
    * @private
    */
-  getCurrentInterstitial_(needPreRoll, numberToSkip, lastPlayedAd) {
+  getCurrentInterstitial_(needPreRoll = false, numberToSkip = null) {
     let skipped = 0;
     let currentInterstitial = null;
     if (this.interstitials_.size && this.lastTime_ != null) {
@@ -473,7 +471,15 @@ shaka.ads.InterstitialAdManager = class {
       const roundDecimals = (number) => {
         return Math.round(number * 1000) / 1000;
       };
-      for (const interstitial of interstitials) {
+      let interstitialsToCheck = interstitials;
+      if (needPreRoll) {
+        interstitialsToCheck = interstitials.filter((i) => i.pre);
+      } else if (isEnded) {
+        interstitialsToCheck = interstitials.filter((i) => i.post);
+      } else {
+        interstitialsToCheck = interstitials.filter((i) => !i.pre && !i.post);
+      }
+      for (const interstitial of interstitialsToCheck) {
         let isValid = false;
         if (needPreRoll) {
           isValid = interstitial.pre;
@@ -484,18 +490,28 @@ shaka.ads.InterstitialAdManager = class {
               this.lastTime_ - roundDecimals(interstitial.startTime);
           if (difference > 0 &&
               (difference <= 1 || !interstitial.canJump)) {
-            if (lastPlayedAd && !lastPlayedAd.pre && !lastPlayedAd.post &&
-                lastPlayedAd.startTime >= interstitial.startTime) {
+            if (numberToSkip == null && this.lastPlayedAd_ &&
+                !this.lastPlayedAd_.pre && !this.lastPlayedAd_.post &&
+                this.lastPlayedAd_.startTime >= interstitial.startTime) {
               isValid = false;
             } else {
               isValid = true;
             }
           }
         }
-        if (isValid) {
-          if (skipped == numberToSkip) {
+        if (isValid && (!this.lastPlayedAd_ ||
+            interstitial.startTime >= this.lastPlayedAd_.startTime)) {
+          if (skipped == (numberToSkip || 0)) {
             currentInterstitial = interstitial;
-            break;
+          } else if (currentInterstitial && !interstitial.canJump) {
+            const currentStartTime =
+                roundDecimals(currentInterstitial.startTime);
+            const newStartTime =
+                roundDecimals(interstitial.startTime);
+            if (newStartTime - currentStartTime > 0.001) {
+              currentInterstitial = interstitial;
+              skipped = 0;
+            }
           }
           skipped++;
         }
@@ -540,7 +556,7 @@ shaka.ads.InterstitialAdManager = class {
       }).length;
     }
 
-    if (interstitial.once || interstitial.pre) {
+    if (interstitial.once) {
       oncePlayed++;
       this.interstitials_.delete(interstitial);
       this.cuepointsChanged_();
@@ -630,6 +646,10 @@ shaka.ads.InterstitialAdManager = class {
         this.setupAd_(nextCurrentInterstitial, sequenceLength,
             ++adPosition, initialTime, oncePlayed);
       } else {
+        if (interstitial.post) {
+          this.lastTime_ = null;
+          this.lastPlayedAd_ = null;
+        }
         if (this.usingBaseVideo_) {
           await this.player_.detach();
         } else {