I'm going to assume by "4 confusions" you mean you hit yourself with confusion 4 times in a row.
The chance of hitting yourself in confusion in Gen VI+ is 1/3, while the chance of Hurricane giving your opponent confusion is 30%. But Hurricane also only has a 70% chance to hit except in rain, and also has a 50% chance to hit in harsh sunlight.
In a normal condition, (7/10)^2 = 49% chance of Hurricane twice in a row. In sunlight, (5/10)^2 = 25% chance to hit twice in a row.
Here are the full calculations:
During rain: So (3÷10)^2×(1÷3)^4 = 0.1111% or 1/900.
During normal conditions: (49÷100)×(3÷10)^2×(1÷3)^4 = 0.05444% or about 1/1837.
During sunny conditions: (1÷4)×(3÷10)^2×(1÷3)^4 = 0.02777% or 1/3600
Hope I could help and thanks KRLW!