Excuse my ignorance, but whats a flow? Im not too sure as Im still in the >20hr stage, but this has been a good read.
At work (Horizon), I hear the pilots all the time. I'm not sure which method it's called (like a call/response), but it goes something like this:
Capt.: "Gear" FO: "3 green"
Capt.: "Radios" FO: "set"
Capt.: "Beacon" FO: "set"
Capt.: "Check 2" FO: "2 clear"
Capt.: "Start 2" etc.