star trek - Do we know if any of the episodes that we watched of ST Voyager were of the duplicate crew?

In the Star Trek Voyager episode "Course: Oblivion" we learn that the duplicate Voyager crew that was created in the Star Trek Episode "Demon" created a Voyager ship and were exploring the galaxy before they began to break down on a molecular level.

Do we know if any of the episodes we watched between the episode "Demon" and the episode "Course: Oblivion" were actually the duplicate crew?