On field crew communication

[masonjarfarm]

I agree the down will be replayed because the IW occurred while the ball was loose {illegal kick}treated as a fumble. B's Captain has the option(not A's captain)of accepting the illegal kicking penalty. Casebook 4.2.3B ruling:if a captain accepts the penalty for a foul WHICH occurred prior to the IW, the whistle is disregarded.The enforcement for the penalty is from the spot of the foul(rule 10.6 all but one principle.Let's say the foul occurred @ B's 20 yd line.Following enforcement it is A's ball 4th and 29 from B's 35 yd line.
This play was shared w/ me last season by an official w/ 43 years experience. Thank you for your suggestions.