When Facebook wrote to the U.K. committee, they said, contrary to your testimony:
Our investigations to date have found there was one data file custom audience, one website custom audience, and one lookalike audience that were used to select targeting criteria for potential ads during this period by both the Vote Leave and BeLeave pages
Don't you think, if Facebook says the same datasets were being used on both campaigns, that it goes back to AggregateIQ's having used them?