I know Redick and Burke can't actually say it on the broadcast even if they're thinking it but there's only one reason why a team that have struggled to stop a drive all series are finally having success at it despite it looking like the potential help defenders are playing closer to the shooters and it isn't because of effort.
Celtics have shot and rebounded poorly but they basically have to get hacked 3 times on a drive to earn a whistle and a lot of the ones that do get called are on the floor fouls.