The maximum score difference is 2 points! The Greens and the 76ers have met 3 times this season, with a total score difference of 4 points, and the two games were decided by 1 point.

In the NBA regular season, the 76ers narrowly defeated the Celtics 102-100 at home.
After this game, the two teams have met three times this season, with a total score difference of 4 points. The 2 points in this game is the largest score difference currently.
The details are as follows:
November 12, 76ers 102-100 Celtics
November 1, 76ers 108-109 Celtics
October 23, Celtics lost 116-117 to 76ers