We are trying to book LHR-GIG-EZE as part of a RTW trip in April using our travel agent. LHR-GIG is fine, but so far no availability on GIG-EZE. This is the BA flight that goes from LHR-EZE with a stopover in Rio. Has anyone tried to book GIG-EZE separately and if so did you have any issues with availability (or does anyone know what the issue might be here?).