How can I delete controlfile autobackup using rman command?

Hello, all

I have databases which are backed up to disk with rman scripts. After that the backup pieces are uploaded to a backup repository in the cloud.

The difficulty is to delete the controlfile autobackups since there are regular controlfiles backups made to disk, also and I cannot easily specify the controlfiles that I want to delete.

For example, I'd like to delete the autobackup files older than one week, but how can I do that easily? I cannot use the retention policy with delete obsolete because I have retention policy for backups of one year.

Thanks in advance.