It would surprise me if that were true. Only because I remember Stevie saying when she wrote "dreams" and took it to the rest of the band, they liked it immediately.(Or maybe she said she "knew" they would like it immediately....mm...big difference
) Nonetheless, I would think it would have more clout that I don't want to know.
As far as the other song-I have no clue
But I am NO fleetwood mac expert-just giving my 2c.