I dont have the whole example but it looks like the company called the bond because rates lowered to a favorable point so it is no longer obligated to pay at the fixed rate on that bond. Then if someone exercises a swaption which the company has sold, it is now obligated to pay the fixed again, only now it is receiving floating at a lower rate since a lower rate environment is the inly reason the company would call the bond. Basically, they are long the option on the callable bond but short the option on the swaption. Unless I misread your question it sounds like the options cancel each other out.
But even otherwise I am not clear on the conclusion I draw from the above.
I went through your response. I do not think what you mentioned (based ont he limited info) is happening ’ Unless I misread your question it sounds like the options cancel each other out.’
They own the option to call the bond and sold the option of the swaption for a fee. It looks like they are simply locked into a fixed rate payer no matter what happens with interest rates. If rates stay high, they continue to pay on the bond. If rates come down, they call the bond, get the swaption excercised so they are fixed rate payer, receive floating. It looks like they are just selling the option that they paid for when issuing the bonds by getting a lower price.