We are able to see lineage connection between two table objects but when we try to drill down to understand which column is flowing through, we couldn't fine any column level relation.
When you go into the lineage view for any asset, you'll see the marker named
BASE on top of the asset name. This is meant to point the user to the fact that the lineage view is being shown with the current asset as focus. You'll see a different lineage view based on which asset is the base.
Furthermore, the column number being shown to you is mean to denote how many columns have lineage. If you click on each column, you'll see the relationship for each column.