Man pages matching name tcpflow in section 1:

tcpflow.1.en	debian 10 / tcpflow
tcpflow.1.en	debian 10 / tcpflow-nox
tcpflow.1.en	debian 11 / tcpflow
tcpflow.1.en	debian 11 / tcpflow-nox
tcpflow.1.en	debian 12 / tcpflow
tcpflow.1.en	debian 12 / tcpflow-nox