They are not “multiple sources” if they just copy each other in broadcasting the talking points.
Maybe the “talking points” are facts?
The case we are dealing with is a report on the state of China-Russia gas negotiations. Is this a “talking point”?
The KGB had a department that inserted identical lies in various countrys’ intelligence files. The stupid CIA would accept these lies because they came from multiple sources. Multiple sources is a stupid way to evaluate intelligence.