Delay after TO

[physicsref]

In the case book/rule book, there are many examples regarding A failing to return to the court in a timely manner following a TO. (Put the ball on the floor and start counting).

What is acceptable when B delays and A is ready? Do you just hand the ball in to A while B is in the huddle trying to decide what to say on the count of three? Do you record a warning in the book for delay without letting A get the cheap hoop? Do you just continue trying to drag the delinquent team out or the huddle? etc. etc. ad nauseum.

Thanks for your suggestions.