Linked Vessels

A Linked Vessel keeps one level of distillate with its pair, wherever the pair stands: pour into one and it flows into the other until both are even. So the store of a workshop reaches the Confluence altar at the other end of the house, with no siphons through the walls. It is no warehouse: the two hold as much as two plain vessels — the level is shared, not multiplied.

Pair them like Through-Mirrors: right-click a lone vessel with another and place it. One current flows: if the vessels hold different ones, the level stands still, and the Loupe says why. It flows two parts every quarter of a second, each part costs five hundredths of a unit of flux of the giving vessel's land, and only while the land of both is loaded. Siphons, brand, seal and spilling — as with a vessel; a sealed one does not share.