Our trip home from Greece was our own Odyssey (sorry, could not resist). As I posted here in June, the summer flight situation derailed tour trip (3 hour 39 min delay from ATH to FRA, missed connection to ORD) and we spent an unexpected night in FRA with a lot (hundreds) of other travelers.
We submitted applications to Lufthansa by mid-June for the EU compensation as well as a refund on the lower class of fare on the FRA - ORD leg (we were booked in Economy Plus, spent the flight in Economy). We received a record locator that day. Since then, crickets. I assume the sheer volume of delays created a backlog at LH, but has anyone received payment?
Finally, because I have gotten so much good traveler advice on this website, passing this along: IF you are traveling ATH to FRA to connect home to the US, if you are on LH1279 d. 1:55 p.m. ATH to FRA I would recommend you have a long (at least three hour IMO) connection time in FRA to account for delays. In addition to the fact it is a large airport, I keep checking that flight and it seems late, many times over an hour, almost every day (I use Flight Stats, on time performance chart). Or use FlightStats or another service to look up the one time record for your own flights. Just a tip to fellow travelers in hopes of helping avoid the issues we encountered.