Im afraid you did not quite get what i meant. Here are two examples of what i was talking about:

Example 1:
xxx: i swing my sword verticaly
yyy: i block with a horizontal parry and riposte
xxx: you parry, fine, but before you counter, i slide my sword against yours, thrusting its tip towards your face
yyy: fine, i die

Example 2:
yyy: i swing horizontaly
xxx: i step backwards and counter as your sword passes by
yyy: i halt my slash as you dodge, and instead, stab you in the leg as you rush at me
xxx: i get hit in the artery and die

Though if i understood you right, you are fine with those kind of interruptions. Please, correct me if i am wrong.