SPA-I-1933 is already logged to show an "approved" banner if order confirmation fails, however it would be good to always show the authoriser information on quote-to-order workflows regardless of the approval status and quote status.
If a quote is rejected there is a banner, but not for approvals. We also store the approval contact information in the database but do not display this anywhere on the Quote window by default, it has to be customised in.