Originally Posted by
halothane
Don't count on it. The company you check in with is going to apply their baggage rules.
Agreed.
The rules of whatever metal your first leg is on dictates the baggage allowances and fees for your entire flight.
In this case, your first flight (ie: where you do the baggage checking step) is on United metal, so you are subject to their int'l baggage allowances and fees.