I've been trying to book a flight from EWR to ATH this summer with a connection in Geneva using "Multiple Destinations". We want to do it this way because other family members have award tickets with that routing....EWR-GVA on UA and then GVA-ATH on Aegean leaving at 11:20am.

The GVA-ATH flight shows up when doing an award search, and when doing a simple GVA-ATH search, but not when doing a revenue search as part of a multi-city search. Interesting, when doing a similar search on ITA as part of a multi-city itinerary, the flight doesn't show up either, although it does show in a search as a direct flight.

WHat gives? Call in and see?