AMC movie channel advertising audio

Factual Questions
1

For the past several weekends, I’ve been noticing that during many commercial breaks (25-75% depending on the time of day), the AMC movie channel shows the video of the commercials, but the audio of their own in-house movie or channel promos. I’m not complaining: it’s always less annoying, and the “dubbing” can make for some hilarious juxtapositions.

I believe the advertisers are aware of this. (It’s hard to miss) Whether by design or coincidence, most of the affected ads have enough text on-screen that I can understand them just as well without the audio

My question: it’s been going on too long and too consistently to be an accident, but I haven’t been able to Google up any news on any bold new, less annoying approach to advertising. Have they simply been falling short on ad sales, and forced to fill the breaks with fluff to keep their schedule intact. Would changing the scheduled airtime require them to show too many more movies per day? [I thought they had a blanket license to a major collection, e.g. a subset of Turner’s]

I could speculate all day, but what’s the Straight Dope?

2

The Are Hijacking The Time to get their own message across.

The local cable service highacks network advertising spots to put on loacal ads to boost their revenue stream.

3

That seems plausible for some cases, but it’s not what I’m seeing on AMC.

The video is for the same national ads AMC always shows [hence, not local] but the audio is invariably for ads for AMC itself [hence, not local, and kind of silly, because I’m obviously already watching that channel.

This fact makes the juxtaposition all the more amusing, because AMC’s self-ads contain key scenes from famous films, and the dramatic, funny or climactic lines get randomly “put in the mouths” of the charaters on the advertisements.