

The harsh interpretation is that Cory is only looking to shore up good will towards the Democratic Party faction that includes Chuck. Hence this isn’t actually a filibuster that might stop something from passing.
The more charitable view is that Congressman Booker is reaponding to criticism by demonstrating a level of action not seen outside an Independent senator and a handful of other house members.
I ain’t rooting against his effort one bit in the face of the GOP, even under the most cynical interpretations of recouperation.
The longest filibuster (against Civil Rights) famously included a curtain and a bucket.