They should just do a 30s spot (i.e. regular ad slot) stating "if you receive your television via antenna/over the air broadcast, you may require changes to your antenna system. Please call 1-800-O-CANADA or visit websitefortransition.ca
That's all you need.
Even better, just insert the ads into the analog-only feed.
We know they have the technology, it's used for simsubbing.
As said, a temporary exception can be made, given the circumstances and that it's not being done to get extra revenue or something like that.
For all intents and purposes, the BDU and OTA feeds would be the same, as BDU's draw from the digital feed anyway (where available).
If there's only an analog transmitter in use and that's how the BDU gets it.. well, the above commercial covers that because of the "if you receive your tv via antenna" part.
If someone agrees and wants to submit this suggestion, go ahead. I can't be bothered at the moment
Just so long as it's not 10 minute crawlers annoying me, I don't care what ads they show.