"Flowchart" has historically, in Brook's time, meant "flow-of-control chart", and these usually degenerate into vast webs of minutia -- useless as abstractions.

"Flowchart" has historically, in Brook's time, meant "flow-of-control chart", and these usually degenerate into vast webs of minutia -- useless as abstractions. But perhaps you meant "flow-of-data between structures" -- in which case we have agreement on engineering, but a muddle on semantics.