Features of various implementations are used to enable delivery of matched functionality, content and/or services, as a part of an interactive television suite of technologies. In some implementations, a content delivery process is enabled so that communication between the primary TV receiver and a supplemental set-top box is reduced in order to avoid the need for one or more provider-specific APIs. For example, one aspect of the disclosure is a method of identifying a media program by capturing display data from the media program, and extracting text from the display data in response to determining that the display data includes the text overlay, wherein the extracted text is associated with the media program. In some implementations, a supplemental set-top box is configured to operate a primary TV receiver, without a provider-specific API, in order to determine the channel line-up available to a particular subscriber through the primary TV receiver.