Content-modification system with household coordination feature

A non-transitory computer-readable storage medium, having stored thereon program instructions that, upon execution by a processor, cause performance of a set of operations comprising:

• receiving, from a first content-presentation device, a request for supplemental content for use in connection with performing a content replacement operation;
• identifying a download conflict between the first content-presentation device and a second content-presentation device having a same internet protocol (IP) address as the first content-presentation device, wherein identifying the download conflict comprises:
• determining a channel on which content is being transmitted as a broadcast stream transmission to the second content-presentation device;
• and identifying an upcoming content-modification opportunity on the channel that is before the content replacement operation;
• and providing, to the first content-presentation device, a response to the request, wherein based on the identifying, the request includes a download delay instruction, and wherein reception of the response by the first content-presentation device causes the first content-presentation device to wait until a condition associated with the download delay instruction is satisfied before downloading a supplemental content item specified in the response.

A computing system comprising:

• a processor;
• and a non-transitory computer-readable storage medium, having stored thereon program instructions that, upon execution by the processor, cause performance of a set of operations comprising:
• receiving, from a first content-presentation device, a request for supplemental content for use in connection with performing a content replacement operation, identifying a download conflict between the first content-presentation device and a second content-presentation device having a same internet protocol (IP) address as the first content-presentation device, wherein identifying the download conflict comprises:
• determining a channel on which content is being transmitted as a broadcast stream transmission to the second content-presentation device;
• and identifying an upcoming content-modification opportunity on the channel that is before the content replacement operation, and providing, to the first content-presentation device, a response to the request, wherein based on the identifying, the request includes a download delay instruction, and wherein reception of the response by the first content-presentation device causes the first content-presentation device to wait until a condition associated with the download delay instruction is satisfied before downloading a supplemental content item specified in the response.