MR LAX
They didn't need to, with the greatest of respect.  On his version they'd confirmed they came from Lindelane, they confirmed their association with Ngobo, to the applicant it was as clear as daylight that that's what they were.  And the mere fact that they then agreed to go back to Lindelane with their family, reinforces that idea because Lindelane is a stronghold of the IFP.