In common compose layout, multiple children may overlap just like they are in a Box(like flutter Stack). When I try to put multiple children into a LazyColumn or LazyRow‘ s item block, they are positioned in order and are not overlapped. What special thing does LazyItemScope do? Does it put all its children into a Column or a Row?

@Composable
fun A() {}

@Composable
fun B() {}

@Composable
fun Container1() { // content: @Composable () -> Unit
    A()
    B()
}

@Composable
fun Container2() {
    LazyColumn { // or LazyRow
        item { // content: @Composable() (LazyItemScope.() -> Unit)
            A()
            B()
        }
    }
}