Charged Conference

[chapmaja]

Here is a what if on the charged conference rule.

Team A has used 3 charged conferences early in the game. In the fifth inning the coach comes out to talk to the pitcher. After talking to the pitcher, the coach walks toward the dugout and tells S1 she is going in to pitch. She says this right as the umpire goes to approach the coach about it being a third charged conference.

Is this a third charged conference or not? (because of the timing of the change vs the conference?) Does F1 have the ability to return as pitcher? What about S1 if the team uses another charged conference later?