Who are you buying the RTW fare from? I think that affects which partners you can use in building the itinerary. So if you bought it from CO you might be able to include the BR segment but not if you bought it from AF (hypothetical - I don't know for certain).

As for other options, the SkyTeam timetable only shows routings on BR using DL and CO codeshare numbers, or via KE on ICN, so I think you're pretty limited. You could always do that as a different segment though it is not apparent to me where in the itin that you listed you intend to go to TPE.