Does a defendant forfeit a challenge to the manner in which the district court imposed sentence by failing to object after the sentence is pronounced, even though the district court does not invite additional objections after it announces the sentence and before it concludes the sentencing-hearing?

QUESTION PRESENTED Does a defendant forfeit a challenge to the manner in which the district court imposed sentence by failing to object after the sentence is pronounced, even though the district court does not invite additional objections after it announces the sentence and before it concludes the sentencing hearing? -ii