Casebook 6.4.3 Situation B & Casebook 9.1.6 Situation A

[assignmentmaker]

Under Fed rules, in Casebook 6.4.3 Situation B we read:

"B1, in a marked lane space, enters the lane prematurely. The administering official properly signals the violation and A1 attempts the free throw. However, A1's attempt does not enter the basket or touch the ring. RULING: The violations by B1 and A1 constitute a simultaneous free-throw violation. Unless another free throw follows, play resumes with an alternating possession throw-in from a designated spot outside the end line."

Then, in Casebook 9.1.6 Situation A we read:

"While A1 is attempting a final free throw, . . . (b)B1, in a marked lane space enters the lane too soon, then shooter A1 steps on the free-throw line while releasing the throw. RULING: . . . In (b), a double violation is called and the ball is put in play using the alternating-possession procedure."

What distinguishes a "simultaneous free-throw violation" from a "double violation"? That there is no team control in 6.4.3 Situation B but there is team control in 9.1.6 Situation A (I take "while releasing the ball" to mean 'hasn't released it yet')? Is this a distinction without a difference?

If, for example, 9.1.6 Situation A were stipulated to take place during the first of two free-throws, would the ruling then be, following 6.4.3 Situation B, " . . . play resumes with an alternating possession throw-in from a designated spot outside the end line."