Is it possible to determine the position of the cms item of combined list?
Hey @head! 
List Combine doesn’t provide built-in position indexing for individual items in the combined result. The attribute simply displays items sequentially from each source collection rather than truly merging them with position awareness.
When you use List Combine, it shows all items from Collection 1 in their original order, then all items from Collection 2, and so on. This means items don’t get a unified position index across the combined result.
You have a few options:
You can display the total number of items in the combined list using the built-in items-count element.
If you need individual item positioning, you’ll need custom JavaScript to add position numbers after the lists are combined.
For more complex ordering, you can combine List Combine with List Sort to achieve proper merged sorting across collections.
To give you the most accurate solution, could you share your Webflow staging URL and let us know what specific positioning information you need?
@Support-Luis or @Support-Pedro can help implement any custom code solution you might need for this.