Originally Posted by
Tennen
IIRC, each break (EWR-LHR / LCY-FRA-NCE / TXL-MUC-EWR) would result in a different baggage allowance. In your case, I don't think it matters, since you'll be in J all the way with *G status. LH Business gets 2x 32kg regardless of flight. With the *G extra bag, your total will be 3x 32kg, which is what you'd get when flying UA. The only difference would be that the intra-Europe LH flights would allow you to bring 2x carry-on bags plus a personal item, although they may (or may not) enforce the weight restrictions.
This is incorrect, but OP has not supplied sufficient information to answer his question.
PNR's are irrellevant. All that matters is ticket(s). If the routing described is on one ticket than the baggage allowance of the marketing carrier of the first segment will apply to all segments of that ticket. Thus, EWR-LHR, presuming a UA-issued ticket for all segments.
If those breaks in OP''s itinerary represent separate tickets, even if in the same PNR, then US-origin or destination tickets will apply the rule above and the other ticket(s) will apply local rules to those tickets.
For reference, OP should check his e-ticket receipt. DOT rules require that the e-ticket receipt show the baggage fees, if any for the first and second segment segment-by-segment.