| CPC H04N 21/4302 (2013.01) [H04N 21/439 (2013.01); H04N 21/458 (2013.01); H04N 21/47217 (2013.01); H04N 21/812 (2013.01); H04N 21/8126 (2013.01)] | 29 Claims |

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21. A system comprising:
communication management hardware operative to:
based on detected progress of playing back content on a primary playback system, synchronize playback of supplemental media associated with the played back content on a secondary playback system;
detecting an advertisement window associated with the playback of the content on the primary playback system, the advertisement window detected based on a manifest file including pointers to segments of the content played back on the primary playback system; and
in response to detecting the advertisement window, discontinue playback of the supplemental media on the secondary playback system.
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