Commissioners got a broad overview of Cook County’s finances and spending plans in the first day of two weeks of budget hearings Monday morning. County Chief Financial Officer Ivan Samstein led testimony for the Bureau of Finance for nearly four hours, outlining the county’s $4.4 billion budget, getting into the minutiae of President Preckwinkle’s proposed sweetened beverage tax, and into a minor tiff with Comm. Bridget Gainer (D-10) over tax collection.