Japan head coach Eddie Jones says the frequency and severity of sanctions being handed out to players during international matches is getting out of hand.
Springbok head coach Rassie Erasmus questioned what more his players can do to avoid sanctions after his side received a permanent red card for the second week in a row.
World Rugby is exploring the possibility of staging Rugby Championship and Six Nations matches in the United States, according to chief executive Alan Gilpin.
South Africa remained the number-one ranked team in the world after clinching the Rugby Championship title with a tense 29-27 win over Argentina at Twickenham's Allianz Stadium on Saturday.
The All Blacks and Springboks will respect a long-standing tradition on Saturday at Eden Park by wearing their traditional kits - despite World Rugby encouraging change.
The Springboks climbed to No. 2 in the World Rugby rankings after their 30-22 win over the Wallabies in Cape Town, combined with the All Blacks' upset loss to Argentina in Buenos Aires.