For mobile layout what you could do is use a custom collection on top of a 2 row helper table.
Label the rows in the helper table row 1 and row 2 and add two choice components inside your custom collection.
On the first choice component apply the visibility condition when helper table row -> equals -> 1… and for the second… when helper table row -> equals -> 2
Here is an example where I used this method with date pickers on mobile.
