Timeout Request Granted . . . When?

[Freddy]

When shall a timeout request be properly granted?
A) After: 1) observing that player control exists and 2) confirming that the head coach is making the request? Or...
B) After: 1) observing that player control exists and 2) confirming that the head coach is making the request and 3) reconfirming that player control still exists?
Sometimes after 1) and 2), the status of the ball quickly changes as a result of a pass, an interrupted dribble, a steal, an attempted goal, etc.
The phrase "such a request being granted only when...the ball is in control...of a player of his/her team" in 5-8-3a seems to lean toward "B". Two weeks ago I recall not granting a timeout until after 3), by which time an out-of-bounds violation occurred, to which the coach remarked, "Thanks, you just cost me a possession!" Yet, I've seen (and have done it myself) a timeout request granted based on the status of the ball when the request was made.
(If there’s an existing thread on this, please point me to it; I'd be happy to review it, but can’t seem to find one.)