Originally Posted by
Often1
The marketing carrier is UA. It's UA ticket stock on a UA flight number. That is true even if another carrier operates the aircraft. Thus, the UA allowance will apply to all segments of the ticket, both outbound to DEL and on the way back to ORD.
That is not completely correct. IATA Resolution 302 goes on to state that "In case of code share flights [Marketing Carrier] will be the Operating Carrier, unless that carrier publishes a rule stipulating that it will be the Marketing Carrier."
That's why I say the rule is ultimately contradictory, and basically allows the marketing carrier to do whatever it likes.
OP, I would count on two bags at 23kg each (economy allowance + *G allowance). Anything beyond that there's a good chance they will charge you for it.