Originally Posted by
jsloan
There is no EC.261 involvement here because OP is asking about a UA-operated flight to FRA. If OP flies LH the entire way, then EC.261 would apply.
Hrm I guess I've always misunderstood that language since OP does have an EU-EU flight, but re-reading the EU 261 rules you are correct (and I've only ever missed cxn on LH/LX/KL). I'll edit my previous post apologies for misrepresenting.