Why transferring Stirlings to Coastal Command has an unknowable payoff

How much difference would transferring Short Stirlings from Bomber Command to Coastal Command in mid-1940 make?

Potentially a great deal, but the result cannot be known because it depends on how Coastal Command uses them.

A mid-1940 transfer of Short Stirlings from Bomber Command to Coastal Command might have been very helpful. The result could have been large, but aircraft numbers alone cannot quantify it. Operational employment would determine whether the bombers translated into useful maritime coverage. Platform availability does not guarantee an effective mission.