I obviously haven't explained very well. What i'm questioning is whether the gear ratio of the overdrive disregarding lockup should be 0.69:1 or whether the stated figure includes lockup.
The stated figure is the gear ratio within the transmission itself. It does not take into account slippage because that can change depending on various factors. So to directly answer your question that figure would "include" lockup.
Earlier transmissions don't have lockup converters and came with various torque converters that provided different slippage depending on the engine, final drive ratio and vehicle weight so to state a figure that takes converter slippage into account would be tedious and not helpful.