Rassie Erasmus appears to have questioned a number of refereeing decisions during Ireland's 19-16 win over South Africa.
The former Munster coach, who is South Africa's Director of Rugby, posted a video online which shows Andy Farrell's side benefit from a kick-through at a ruck, from Dan Sheehan, and a similar kick from South Africa being called back by referee Nika Amashukeli.
Erasmus thanked the Irish supporters for the atmosphere they created at the Aviva Stadium, saying it was a game of "big battles", before adding "but small margins" with an emoji pointing to the clip below.