First try: it didn't work...

RecyclerViewExtension.kt

fun RecyclerView.bindScrollTo(vararg destinations: RecyclerView) {
    object : RecyclerView.OnScrollListener() {
        override fun onScrollStateChanged(recyclerView: RecyclerView, newState: Int) {
            super.onScrollStateChanged(recyclerView, newState)
        }

        override fun onScrolled(recyclerView: RecyclerView, dx: Int, dy: Int) {
            super.onScrolled(recyclerView, dx, dy)
            // First try: it didn't work...
            destinations.forEach { destinationRecyclerView ->
                destinationRecyclerView.scrollBy(dx, dy)
            }
        }
    }
}