Originally Posted by
flyerCO
Till DoD DL has no ability to see or touch an UA ticket. All they have the ability to see is the reservation for the DL flight. Nothing new or strange here.
Also while booked into Y, it's unlikely a true Y fare.
^ ^ Of course it's not a true Y fare, it's a dirt cheap airline interline fare. So an upgrade cost is likely to be very high.
And certainly DL knows the dollar amount that UA is paying. That amount will be visible if OP's husband claims SkyMiles for the flight.