6 volt LT at 2 amps

[ppppenguin]

Lawrence, the windings only need to be the same voltage, not the same impedance, to avoid harmful circulating current. If the winding impedances differ (such as if one is wound over the other and hence has more wire in it) then the currents won't accurately share when they are in parallel. This effect will be small in the sort of things most of us deal with.