It was the 13th time the Spurs pair have combined for a goal this season, equal to the number achieved in an entire season by Alan Shearer and Chris Sutton for Blackburn Rovers in their title-winning season of 1994/95.
Of those 13 goals, nine were like the one against Leeds, scored by Son from Kane assists, with the South Korean providing for his English team-mate four times.
Son's goal was also special in that it was his 100th in all competitions for the club.
Most goal combinations in a PL season
Most PL goal combinations
Kane's first assist in six Premier League matches took his total this season to a league-leading 11.