There is currently no native support for displaying tracker program “Event Notes” (comments) directly as a column in the Line Listing app or standard analytics reports.
Notes are stored in a separate table in the DHIS2 database, so database query should be an option, but that’s not something will be useful in Line Listing.
@JaimeLopez, interesting feature request. If you’d like you can create a feature request idea especially if you can provide more context to why this is important in your use-case (see ideas!).