Personally, I think they had plenty of hours to turn Flake without the 4 hour delay. For me - litmus test was that K got through. I thought Grassley intentionally handed them concession after concession for the public’s view, every concession he conceivably could without losing k - to prove over and over and over (to the public) that every (bipartisan) concession WAS made so that later, when the Dems scream “No Fairsies!” the public will have memory of a slow foot dragging concession laden process. I don’t have a legal background - JMHO