The flowcharts (that I've seen) don't do a good job of capturing who does what in the process, whereas sequence diagrams do.
Side note - my father, during his career, had a huge collection of flowchart stencil sets that he used; I really wish that I had a chance to grab them.
Side note - my father, during his career, had a huge collection of flowchart stencil sets that he used; I really wish that I had a chance to grab them.