Is a defendant entitled to a new sentencing hearing at the same time as the previous hearing?

discretion at a new sentencing hearing. [Citations.] Defendants are entitled to 'sentencing decisions made in the exercise of the "informed discretion" of the sentencing court, ' and a court that is unaware of its discretionary authority cannot exercise its informed discretion. [Citation.] [] Remand for resentencing is not required, however, if the record demonstrates the trial court was aware of its sentencing discretion. [Citations.] Further, remand is unnecessary if the record is silent concerning whether the trial court misunderstood its sentencing discretion. Error may not be presumed from a silent record. [Citation.] ' "[A] trial court is presumed to have been aware of and followed the applicable law." [Citations.]' [Citation.]" (People v. Brown (2007) 147 Cal.App.4th 1213, 1228-1229.)