The baggage allowance on the mixed award (booked with united mileageplus) for HYD-BKK-HND-ORD-MSP on the united app shows $119 USD for first bag and for second bag. The HYD-BKK as well as HND-ORD legs are in business (Thai Airways and United Polaris). The BKK to HND leg is on ANA in economy while the ORD-MSP is in united economy. The ANA leg if booked as standalone offers 2 bags in economy. Both the business legs also have two bag allowance (with different weight limits). Only the ORD-MSP leg would normally not include any bags at all.
Is the baggage allowance in the United app correct? If yes,
Under what rule am I being charged even for the first bag on this itinerary?