I am flying on two separate tickets from GDN to ORD and I would like to check my baggage all the way through.

The first ticket was issued by LOT Polish Airlines for GDN-WAW-FRA (economy class). The second ticket was issued by United Airlines for FRA-ORD (business class).

I am *G through United's MileagePlus (Premier 1K).

Can I check baggage at GDN with LOT all the way through to ORD? If so, what is my checked baggage allowance at GDN?

Thank you for your help.