SA's Lungi Ngidi celebrates Hardik Pandya's wicket yesterday. Pic/Getty Images

When Virat Kohli was engaging in skirmishes with Indian and South African journalists over conditions, home and away records and more, Faf du Plessis, South Africa's captain, was sitting patiently at the back of the press conference room, with Lungi Ngidi, Man of the Match on Test debut for having returned second innings figures of six for 39.