Originally Posted by
WineCountryUA
The T&Cs refer to segments between EWR & LHR as the requirement.
That's my point: have a segment in Polaris (and operated by UA of course, automatically) between EWR and LHR, then put whatever else (UA, RJ affiliates, *A partners, etc.) you want onto the ticket. The only thing that matters is EWR-LHR or vv.