On other question, I seem to be a little confused about domestic travel within the US and Canada. The rules seem to state that on a DONEx that you are downgraded to economy on domestics and business is fine on US/Canada flights, yet some people seem to travel first on some flights within the US. Could somebody please clarify what class I am to travel in?

For example, I read recently in this forum that travelling on a DONEx between SFO and BOS would actually allow the traveller to go in First.

Any clarification would be helpful.

Thanks!