Train level crossing ideas question

[XG BC]

Someone on reddit asked me how this level crossing works. I have already figured out how each of the barriers on one side is connected, but i havent been able to figure out how the sides are connected to each other. there would be one plate of space between the rails and the floor. The barriers are connected to each other with a slide system, where one side has gearing to invert the motion.

my idea would have been to use rigid hoses, and these clip parts, but i dont think thats the solution either.

https://imgur.com/a/uopNifw

[idlemarvel]

I don't think a bar with clips would be a string enough connection to lift a barrier.

It looks like a toothed rack is moving a plate under the rails. Maybe they have used single rail pieces under the crossing which would give you a plate height to play with with a larger gap between sleepers.

[t-brick]

Maybe Bars 12L with 1 x 2 Plate End Solid Studs and 1 x 1 Round Plate End (https://www.bricklink.com/v2/catalog/catalogitem.page?P=42445) are used to connect the sliders on both sides under the rail pieces?