I read it the same way as you the first time. It was only when I saw F0 A0 that I looked again. If the OP had purchased 2 F tickets today with such low availability they would have been hellishly expensive so it piqued my curiosity.

The other coincidence is that the OP does talk here about flying in F today but that was a bizarre post in its own right. It was the 'grabbing' part that I thought was odd.