About 4-5 meters I think
We don’t do timescales, but we are certainly deeply discussing data chains, simulations, debates and detailed design before its implemented. Still happening in great detail. Means the implementation will be much faster, but this is all necessary tough work we are doing right now. Its great we have 2 working options and are focussing on the simplest with the most natural design (easiest, as we copy nature as opposed to create magic numbers, its a thing for me, always).